I participated in a hackathon called "Hack Your Heritage" where people created projects in three days using open material from selected Finnish museums and galleries. The event was held at the Media Factory at my university, Aalto University School of Arts, Design and Architecture.
Photographs used from these sources:
Suomen Kansallisgalleria/National Gallery of Finland (http://www.lahteilla.fi/simberg-data/#/overview)
Svenska litteratursällskapet i Finland/The Society of Swedish Literature in Finland (https://www.flickr.com/photos/slsarkiva/)
Suomen Valokuvataiteen Museo/The Finnish Museum of Photography (https://www.flickr.com/photos/valokuvataiteenmuseo/)
Song "The Brookland Road" by Olivia Chaney downloaded from the Free Music Archive: