Hamburger Stiftungstage

In the page's words:

The Hamburg Foundation Days bring to life the many good things that enrich Hamburg every day. In a colorful program, you can discover new things, be active, help shape, marvel, celebrate, enjoy, talk and experience charitable foundation work up close. Hamburg's foundations and their partners invite you - big and small, young and old, from Bergedorf to Blankenese and Poppenbüttel to Harburg. Every year, Hamburg's foundations open their doors a little wider during the Foundation Days and invite everyone in Hamburg to get to know the work of the foundations. A highlight of each Foundation Day is a big party at the Rathausmarkt.