Lowell (Martian crater) Lowell (Martian crater) The Lowell Crater is a large impact crater on Aonia Terra in the Thaumasia quadrangle of Mars. The crater is about 203 kilometers (127 miles) in diameter. Lowell Crater has a ring of mountains on its floor which gives it a sort of bull's eye appearance. Its nearby features include the craters Slipher to the north, Douglass to the east, and Coblentz to the southwest, the small mountain Aonia Mons to the west, and Aonia Planum to the southeast. Lowell Crater is named for Percival Lowell who built the Lowell Observatory in Flagstaff, Arizona, in 1894, and
Allen House (Lowell, Massachusetts) early 1860s as the mansion house of Rollin White, who invented a type of rear-loading revolver. White worked for Samuel Colt in Hartford, Connecticut for many years before moving to Lowell and establishing his own firearms company, later the Lowell Arms Company. The house was later the home of Charles Herbert Allen, a politician prominent in state politics and the first civilian U.S. governor of Puerto Rico. Allen House (Lowell, Massachusetts) Allen House stands on the UMass Lowell South Campus. It is set on a rise above the Merrimack River, of which it has commanding views. It is an irregularly