Kalorama is a neighborhood in Washington DC. The area was home to the Nacotchtank and Mattawoman tribes until King Charles II of England gave one of his former servants a 600-acre estate, Widow's Mite, in the area during the 1600s. The area was included in Prince George's County in Maryland from 1696 to 1790, after which it became part of Washington County. A manor house was built in 1795, and Joel Barlow renamed the estate to Kalorama, meaning "beautiful view," in 1807. The American Civil War saw the estate be used as a US Army cavalry barracks, a Veteran Reserve Corps hospital, and a prison camp for Confederate States Army soldiers, and Walt Whitman frequently visited wounded soldiers there. During the 1880s, the estate was sold and subdivided into different lots. During the 1890s, thte extension of streetcar lines spurred development in Kalorama. Hundreds of rowhouses were built in the early 20th century, and it retained a historic atmosphere during the 21st century. The Kalorama Triangle Historic District was created in 1987.