One of Trondheim's surprise treasures is inside the downtown public library. The library was built on the site of the old city hall, which itself was built on the site of a church yard from the 1100s. When the library was built, the old ruins were discovered and they were incorporated into the library itself. It is now possible to see sections of the church yard wall and a set of three skeletons, a man, woman and child which are displayed exactly as they were found. All this is visible from a bridge in the lobby of the library. In an adjacent room, artifacts and art from this time are displayed in a mini-museum.