Located on the Wabash River in southwestern Indiana, Vincennes is the oldest city in the state. Founded in 1732, the city was originally part of France's Louisiana Territory, and became the site of Fort Sackville. After Britain wrested control of the area, it was here that George Rogers Clark handed the British one of their most important defeats during the Revolutionary War. The city hosts a monument in his honor. From 1800-1816, the city was the capital of the Indiana Territory, which was all land west of the new state of Ohio, north of the Ohio River, and east of the Mississippi River.