Theatre
You enter the wasteland beyond the door.
First, you all give thanks and eat some food Dave conjures. It is good and refreshing.
Walking in the valley is somewhat treacherous, with all the broken glass and scraps of rusty metal all around you. There does seem to be something of a path heading out from the door, which bifurcates, one fork leading to the domed building to your right. Pale light from the dark sky illuminates this land; the colors are earth tones, brick and orange, metallics, brown, black, and gray.
The building is large, the size of a gymnasium. Parts of the dome above have collapsed, exposing the structure to the outside. A large set of glass double doors form the entrance, but they have been chained shut; while the chain and lock are rusted, there is a considerable amount of material.
You can see within the building though, to the extent the exterior light provides. This building was once perhaps an theatre; it looks like there are benches and a stage. Over the stage is where large portions of the roof have collapsed; the light that shines down from above reveals what seems to be a grand piano, lying in a heap.