Although the naming guidelines for elements definitely allow place-derived names, the guidelines for places on the moon do not. Nevertheless, there is a "Mare M

Although the naming guidelines for elements definitely allow place-derived names, the guidelines for places on the moon do not. Nevertheless, there is a "Mare Moscoviense / Sea of Moscow" because "Moscow is a state of mind" (lunar maria are usually named after states of mind, etc., e.g. Sea of Tranquility, Sea of Tears). Mare Moscoviense is one of the very few maria on the far side of the moon: if you've never looked at photos of the far side, you'll be surprised how different it looks from the near side.