Washington, 17 June 2026

Just days after the completion of a $14.2 million renovation, the famous Reflecting Pool between the Lincoln Memorial and the Washington Monument in Washington has once again turned green with algae, prompting the U.S. government to deploy a special aeration device.

A Basin with History

Stretching approximately 600 meters long and 51 meters wide, the Reflecting Pool, constructed in 1922 and 1923, is among the most photographed landmarks of the U.S. capital. On its banks, several hundred thousand people gathered in 1963 when civil rights leader Martin Luther King Jr. delivered his famous "I Have a Dream" speech from the steps of the Lincoln Memorial. For decades, the basin has also been one of those sensitive places where American presidents stage their visions of national dignity and the urban landscape.