Tinian's main attractions are the airstrips used by the US military during World War II. The airfield was earlier known as West Field, or Gurguan Point Airfield following massive re-building of the original Japanese constructed airfield in 1945. The newly expanded airfield became operationally ready in the early spring of 1945, and the US 20th Air Force XXI Bomber Command 58th Bombardment Wing was based there.