The Martin Luther King Memorial and cherry blossom trees are seen on the Tidal Basin in Washington

 
The Martin Luther King Memorial and cherry blossom trees are seen on the Tidal Basin in Washington
The Martin Luther King Memorial and cherry blossom trees are seen on the Tidal Basin in Washington, March 18, 2012. This year marks the 100th anniversary of the gift from Japan to the United States that started with a planting ceremony between then U.S. First lady Helen Herron Taft and Viscountess Chinda, wife of the Japanese ambassador. REUTERS/Gary Cameron (UNITED STATES - Tags: ANNIVERSARY ENVIRONMENT POLITICS)