6. The Essene Monastery has a room designed so that the rays of the setting sun on the summer solstice illuminate the eastern wall.
The Essenes were an ancient Jewish religious group in Palestine, Syria and Egypt. The Essene Monastery in Qumran, Egypt where the Dead Sea Scrolls were discovered. The largest room in the Qumran ruins has a window that allowed light of the setting solstice sun to illuminate the eastern wall.