New Adventures of the Infinity Legion
The Silent Citadel
Real name: none
Coordinates: Parsons Crater, the far side of the Moon
Legal status: unknown to most citizens of Earth; administered by the United Nations under the terms of a secret international treaty.
Group affiliation: none
First appearance: Society of Power Men #202
History: First discovered during an Apollo mission flyby in the 1960s and hastily classified, the Silent Citadel is the half-buried ruin of an ancient alien city on the far side of Earth’s moon. There is much speculation about who built it and why, but little in the way of hard facts.