The story
The Weimarer Fürstengruft is the ducal burial chapel of Saxe-Weimar-Eisenach and is located in the Historical Cemetery (Historischer Friedhof Weimar). It houses the tombs of Goethe and Schiller. It is part of the Klassik Stiftung Weimar and since 1998 it and the cemetery have been part of the Classical Weimar World Heritage Site. The cemetery also houses the Monument to the March Dead.
From Wikipedia’s article on Klassik Stiftung Weimar, shared under CC BY-SA 4.0.5