The 555-foot tall Washington Monument was dedicated at a ceremony featuring President Chester Arthur alongside fellow politicians, engineers and freemasons.

American President George Washington delivered the very first State of the Union address to Congress.

Washington’s face was the first to be completed, seven years after work began. In July 1939 Roosevelt was the final likeness to be dedicated.

It had taken Congress eight years to agree on how to fulfil James Smithson’s desire to establish and institution ‘for the increase and diffusion of knowledge’.