Washington National Cathedral - Space Window (Apollo 11 lunar sample)

Washington National Cathedral's Space Window contains a small fragment of lunar rock from the Apollo 11 mission embedded in its stained glass, a donation from NASA that commemorates the Apollo 11 crew. The window is a permanent architectural installation within the cathedral and is part of a suite of modern stained-glass works installed in the 20th century. The Space Window is frequently cited in documentation about the cathedral's art and memorial installations.