The Pan American Union is the home of the world's oldest international association, founded in 1890 to foster cultural and commercial ties among the Western Hemisphere republics. It serves as a focal point of Washington's diplomatic and cultural…

Built in 1935, this bridge replaced the 1891 iron trestle bridge that had been constructed in the same location. The Commission of Fine Arts considered bridge designs for this site for years before finally settling on Paul Philippe Cret’s…