Forever etched in our memories as the site where visitors from Earth first set foot upon the Moon, the Sea Of Tranquillity ("Mare Tranquillitatis" in Latin) is the premiere lunar location. While noted primarily for its historical significance, the northwest Tranquillity region also features incredible terrain that includes the Crater Jansen group, as well as craters Cajal and Sinas. In addition to the nearby Apollo 11 landing site, the Ranger 8 and Surveyor V unmanned missions also touched down in Tranquillity. Also nearby is the Sea Of Serenity, to the north of Tranquillity.

While Mare Tranquillitatis covers the great majority of this sector, parts of other lunar seas also make appearances here, including Mare Serenitatis (top left corner) and Mare Fecunditatis (bottom right corner). Two smaller bays, Sinus Amoris (top edge, right of center) and Sinus Asperitatis (bottom edge, left of center), also appear. Nearly hidden in the lower left corner are three almost indistinct craters — Aldrin, Collins and Armstrong — named for the Apollo 11 astronauts. Look for neighboring craters Ritter and Sabine along the lower left edge, then move carefully toward the east to locate them; the Apollo 11 landing site, where Armstrong and Aldrin became the first men to set foot on the Moon, is slightly to the south of the commemorative craters.

ZONING: Proposed Tourism (T-1), Scientific Industrial (S-1) and Commercial Industrial (C-1).