Bremer Loch, Bronze donation box at Market Square in Bremen, Germany
The Bremer Loch is a circular bronze slot set into the ground in front of the Parliament building. Money dropped through it flows underground to fund community assistance programs.
This donation system was created in 2007 as a new way to collect funds for the Wilhelm-Kaisen-Bürgerhilfe foundation. The installation brought a creative approach to charitable giving in public space.
This slot connects to the story of the Bremen Town Musicians, a famous figure in local folklore. Animal sounds play when visitors drop in money, reinforcing the link to this traditional tale.
The slot sits openly in the ground and is easy to find right in front of the Parliament building. You can drop coins or bills in at any time without special conditions.
Below the surface sits a system with a steel bucket and light sensor that triggers animal sounds. This hidden mechanism works unseen to register donations and activate the unexpected noises.
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