Washington DC
circa 1960

The Andrew W. Mellon Memorial Fountain is a bronze fountain sculpture by Sidney Waugh as a memorial to Andrew W. Mellon. It is located at the eastern tip of the Federal Triangle within the intersection of Pennsylvania Avenue, Constitution Avenue, and 6th Street NW in Washington D.C., United States. The fountain is across Constitution Avenue from the West Building of the National Gallery of Art. The Department of the Interior maintains the fountain, which President Harry S. Truman dedicated on May 9, 1952.

The round fountain is made up of three small-to-large nested bronze basins, which sit in a granite outer basin. The outer, and largest, bronze basin is decorated in zodiac signs which sit in their "correct astrological position for the sun's rays." The small basin serves as the venue for a 20 foot tall water spouting jet. The water then proceeds to spill over the small basin and over the edge of the other basins, eventually over and into the granite basin. Surrounding the fountain is a seven foot wide granite walkway and a semi-circular granite bench.