A Federation settlement, placed by Star Trek: First Contact on Earth's Moon, that raised a false alarm about a Borg attack in the Next Generation episode Descent.
New Berlin is a Federation colony. In Star Trek: First Contact, Riker names it alongside Tycho City and Lake Armstrong as one of the features of the inhabited Moon that can be seen from Earth on a clear day in the 24th century.
It had been mentioned earlier in the Next Generation two-parter Descent. With Borg under Lore's influence raiding Federation outposts in 2369, nervous colonists at New Berlin report an attack, and the USS Enterprise-D responds. The supposed Borg ship turns out to be a Ferengi trader, a sign of how jumpy the sector has become.
The settlement itself has never been shown on screen, and nothing more is established about its size or history.