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Hofflohmärkte, neighbourhood courtyard flea market in Munich

Hofflohmärkte, neighbourhood courtyard flea market in Munich Hofflohmärkte is a Germany-wide reuse programme: residents register a private courtyard, garden, or garage and sell pre-loved goods while neighbours follow a linked tour plan through the district in Munich. The platform runs in 30+ cities and 300+ neighbourhoods; initiator René Götz operates registration, participants organise their own courtyards. What you can do - Download the tour plan PDF for your Viertel (published about one week before each market day) - Walk the linked addresses and buy second-hand treasures from neighbours - Register your own Hof if you have landlord approval and goods to pass on How it works - Sales stay on private ground only, not sidewalks or public space - Typical hours: Saturdays 10–16, Sundays 11–16 (Munich also runs selected Friday evenings with M-net sponsorship) - No food sales; private sellers only, professional dealers are not welcome - Registration closes three weeks before each date for tour-plan marking; late sign-ups are accepted but may not appear on the map - Organisers may cancel a date if fewer than 30 courtyards register, fees are then refunded About Hofflohmärkte Neighbours register a private Hof, Garten, or Garage on Hofflohmärkte and sell used goods on scheduled Viertel days. Registered addresses appear on a tour plan published about one week before each date. Sales happen on private ground only. See city pages for local schedules and Spielregeln & Tipps for seller rules. Why it matters Every item re-homed from a courtyard is one less thing bought new or landfilled, and a chance to meet the people who live behind the front doors.

Join the Wikimedia Hackathon in Tirana

Join the Wikimedia Hackathon in Tirana Wikimedia's hackathon meets in Tirana so contributors can ship MediaWiki patches in April. Neighbour tip Bring a friend who has never visited before; shared first visits help you remember names, routes, and follow-up events you might skip alone. What you can do in Tirana - Ask a volunteer what follow-up dates they recommend for newcomers before you leave the site - Mark 9–11 April 2027 on the hackathon wiki page (Wikimedia Hackathon 2027) - Register when general registration opens from mid-January 2027 per the organiser timeline - Join pre-event online clinics if the wiki lists them for first-time contributors - Pair sightseeing in the Skanderbeg area with evening social events posted by WoALUG and Wikimedia Foundation hosts How to join Follow registration instructions on mediawiki.org; scholarships and visa letters may have separate deadlines. Bring a laptop, project ideas, and patience for multilingual hallway debugging. Share one thing you learned with a neighbour when you return home; teaching doubles your own recall and spreads open routines. When & where Tirana, Albania - venue details firm up on the wiki; plan around the city centre and Skanderbeg Square when choosing lodging per the organiser page. Why it matters in Tirana Moving the hackathon to the Western Balkans spreads wiki skills beyond Western European hubs and welcomes Albanian-language communities into core tooling work. Bring a notebook; details you capture on site help your block organise a return visit or small solidarity fund drive. Good to know - Do I need to be a coder? Documentation, design, and community roles welcome; read role descriptions on the wiki. - Is travel subsidised? Scholarship rounds are announced on the same page when open. - Which language is default? English is common in devrooms; local hosts may offer Albanian support at social events.

Join the 40C3 Congress in Hamburg

Join the 40C3 Congress in Hamburg 40C3 fills Hamburg Messe with hacker talks, assemblies, and hands-on zones at year-end. Neighbour tip Bring a friend who has never visited before; shared first visits help you remember names, routes, and follow-up events you might skip alone. What you can do in Hamburg - Ask a volunteer what follow-up dates they recommend for newcomers before you leave the site - Read 40C3 dates 27–30 December 2026 and venue notes on the CCC infos page (40C3 infos) - Buy a congress ticket when sales open; assemblies and self-organised sessions fill the schedule boards on site - Join beginner-friendly tracks on encryption, repair, and civic tech when the programme publishes - Volunteer for angel shifts or infrastructure teams through official CCC calls only How to join Congress is ticketed. Purchase through the official CCC ticket system linked from events.ccc.de - avoid scalpers. Assemblies welcome proposals before December; read the wiki for submission windows and code of conduct. When & where Hamburg Messe, Messeplatz 1 area, Hamburg, Germany. The infos page confirms Messe halls for 40C3 per the organiser page; follow signage for day passes and wristband checks. Why it matters in Hamburg Europe's best-known hacker congress mixes radical tech politics with practical workshops neighbours can reuse in local clubs and schools. Bring a notebook; details you capture on site help your block organise a return visit or small solidarity fund drive. Good to know - Is 40C3 all night? Congress halls run long hours; plan rest and transit - Hamburg public transport offers night options on holidays. - Are talks recorded? CCC usually publishes recordings after the event; verify on media.ccc.de when available. - Can minors attend? Read youth rules on the infos page each year; some areas are adults-only.

Ask for circular demolition in Berkel

Ask for circular demolition in Berkel In Berkel en Rodenrijs, ask Mustang for a circular demolition that reuses greenhouse glass and steel. The firm keeps a yard on Noordeindseweg where those parts are checked, cleaned, and stored for a second build. What you can do in Berkel - Ask Mustang to list what is in a greenhouse before anyone cuts it down (Mustang circular demolition) - Ask which glass, gutters, and steel can go into another greenhouse - Ask how parts move from the site to the yard, and what is cleaned there - If a part cannot be used again, ask how it will be handled - Read the contact page and ask them to walk the site with you How to join Mustang is a company, not a volunteer club. You contact them when a greenhouse or a building needs to come down. They start with a list of materials and a report of what still has value. Then they take the reusable parts off, move them to the yard at Noordeindseweg 346A, and check them. Most parts later go into another greenhouse. Partners named on the page are Kerklaan Greenhouses and Kerklaan Horti Materials. The page does not say the yard is a walk-in shop. Ask before you visit. Why it matters in Berkel Glasshouse country is full of frames that still have years in them. A careful take-down keeps that glass and steel in the district instead of ordering a full new kit. You also get a plain list of what is worth keeping before the machines arrive. Find more community projects in Berkel en Rodenrijs. Good to know - What does circular demolition mean here? Mustang describes it as taking a greenhouse or a building apart so the materials are used again at a high quality. They also take away the parts that cannot have a second life. - Where is the yard? Noordeindseweg 346A, 2651 LM Berkel en Rodenrijs, the Netherlands. Use the contact page rather than arriving unannounced. - Who is it for? Growers and owners who want a greenhouse taken down and the good parts built again. The page does not list a price.

Plan circular demolition in Roskilde

Plan circular demolition in Roskilde In Roskilde, you can see how circular demolition was planned at Musicon, the old concrete works the city bought in 2003. A pre-demolition audit of Hall 12 listed what could be used again before the selective take-down began. What you can do in Roskilde - Walk the Musicon district and see old factory ground turned into a neighbourhood (CityLoops on circular demolition) - Ask the city to require a material audit before the next public building comes down - Read the two CityLoops guides: one for the audit, one for selective demolition - If you own a building, use the Copenhagen Værdibyg guide to set a reuse aim before you tender the job (Værdibyg circular demolition booklet) - Ask designers to look at the audit while they draw the next building How to join Musicon is a public district of about 200,000 square metres, a former concrete factory and gravel pit. The city did not lock it to one fixed plan. Projects grow step by step with residents, builders, and the municipality. Hall 12 was audited by Golder: a desk study, then a field study, then a list of how to handle each material, including a store of saved parts. You can walk the district. You cannot join the Hall 12 works as a volunteer day. The audit is the pattern to copy. Why it matters in Roskilde An early list stops good doors, timber, and steel from being treated as rubbish. CityLoops found that contractors do not add this audit on their own after the contract is signed, so the city has to ask for it in the tender. A Danish client can follow the same idea with the Værdibyg steps: set an aim, survey resources, and write the handling rules into the tender. Find more community projects in Roskilde. Good to know - What is a pre-demolition audit? It is a list of materials, how much there is, how clean they are, and whether they can be used again, recycled, or must be treated as harmful. CityLoops says reuse is hard to promote without that list. - When should the first clear-out happen? As soon as the last user has left, before damp and vandalism spoil loose items.

Use circular demolition rules in Taastrup

Use circular demolition rules in Taastrup In Taastrup, circular demolition rules were written so the old city hall would not be smashed by default. The 1980 hall at Bygaden 2 is being kept and turned into homes. That saves more than sorting rubble. What you can do in Taastrup - Walk by Bygaden 2 and see the hall that stayed up (Høje-Taastrup on the old hall) - Ask your council to require a resource map before it sells a building for demolition - Ask for at least 80 percent by weight of clean materials to be reused, recycled, or recovered if a part must come off - Look at the new city hall, which was built with a recycled concrete foundation (CityLoops handbook) - If you pay for a demolition in Denmark, set a reuse aim with the Værdibyg guide before the tender (Værdibyg booklet) How to join The municipality sold the old hall to IKANO with circular conditions. A pre-demolition audit had to map harmful materials and parts worth keeping. Selective demolition applied to parts that could not be used in place. The later plan keeps the hall, about 17,000 square metres, and turns it into about 200 homes, with about 130 townhouses around it. The old heat plant on the grounds is planned as a neighbourhood house of about 200 square metres. The grounds are about 100,000 square metres. Staff left in February 2023 for a new hall at Rådhusstræde 1. This is not an open-house tour. You can see the building from the street. Why it matters in Taastrup Keeping the hall avoids about 20,000 tonnes of new raw material and about 2,000 tonnes of carbon dioxide compared with knocking it down, according to the CityLoops account. A resident in Copenhagen can reach Høje-Taastrup by suburban rail and see a real case of "do not demolish if the building can still work". Find more community projects in Høje-Taastrup. Good to know - What if some parts still come off? The updated rules still ask for selective demolition of those parts, and they count a structure that stays standing as fully kept in use. - Where is the new hall? It is at Rådhusstræde 1. The photo shows that tower. The old hall is at Bygaden 2.

Sort circular demolition piles in Mikkeli

Sort circular demolition piles in Mikkeli In Mikkeli, circular demolition sorted more than 99 percent of two public buildings so concrete, bricks, and a few special parts stayed in use. The sites were Pankalampi health centre and Tuukkala hospital, both taken down in 2021 under CityLoops rules. What you can do in Mikkeli - Ask the city to put the same sorting list into the next demolition contract (CityLoops in Mikkeli) - Ask for a pre-demolition audit early enough that designers can use the parts - Ask for a separate contract to clear furniture and easy parts before the heavy machines start - Visit Mikkelipuisto to see granite slabs that came from the Tuukkala yard - Read the CityLoops selective demolition guide and the Mikkeli report before you copy the contract How to join The buildings are gone, so there is no live tour. Pankalampi stood at Kiiskinmäenkatu in the 50130 district: a 1976 health centre with a 1992 extension, a 1979 dental clinic, and a 1992 garage, about 9,855 square metres. Tuukkala hospital, empty since 2010, had a 1960 part and a 1970s part. Ahosen Palvelut from Jyväskylä took Pankalampi. Terra Infra from Kouvola took Tuukkala. Building Services ran the contracts. Miksei and Xamk wrote a model contract other cities can reuse. Why it matters in Mikkeli The contract names the piles, and someone checks during the job. At Tuukkala, Metsäsairila recorded 9,019 tonnes, of which more than 8,000 tonnes were concrete and brick, and only 58 tonnes were mixed waste. The city also saved a fire escape from Pankalampi for a new day care, sold the backup power plant, and let a vocational project turn oak boards into a table top and cutting boards at ESEDU. Find more community projects in Mikkeli. Good to know - Why strip the building before the excavators? In Mikkeli, empty public buildings can sit for years. A separate strip does not need a demolition permit, so local firms can start earlier. - Where did special pieces go? A fire escape from Pankalampi went to a new day care. Granite slabs from the Tuukkala yard went to Mikkelipuisto.