Grünenberg Castle Ruins
The Grünenberg castle ruins lie on the Schlossberg above Melchnau in the Bernese Oberaargau, near the cantonal border with Lucerne. The medieval castle complex from the 11th/12th century was comprehensively restored between 1992 and 1999. Particularly worth seeing are the late Romanesque St. George castle chapel with its unique floor made of St. Urban bricks and the 26.8-metre-deep well. A protective structure over the chapel floor and information panels explain the history of the site.