is repainted with 60 metric tons of paint every 7 years. It takes about 18 months for 25 painters using 1,500 brushes to repaint the entire Tower.

4) Because heat causes the metal Tower to expand and cold causes it to shrink, the height of the Tower can vary with the outside temperature by 15 centimeters (5.9 inches). Winds can cause the top of the Tower to sway, side-to-side, by up to 7 centimeters (2.8 inches).

5) Roughly 250 million people have visited the tower since it opened. Take a virtual tour in French or English here.

6) A month after its opening, the Tower had working elevators. This was a huge feat, considering the curves of the Tower and the weight those elevators had to carry. The Tower still hasIn his announcement, Ray Buckley (left) said the DNC required "radical reform." | AP Photo New Hampshire chairman jumps into DNC race

New Hampshire Democratic Party Chairman Ray Buckley announced his candidacy for Democratic National Committee chairman on Tuesday.

"I’m in!" Buckley wrote in an email announcing his candidacy. "I am a candidate for Chair of the Democratic National Committee. I look forward to a robust discussion with you on the future of the Democratic Party and I ask for and hope to earn your support."


Buckley's announcement expands the field of candidates running to succeed interim DNC Chairwoman Donna Brazile to four, including South Carolina Democratic Party Chairman Jaime Harrison, former Vermont Gov. Howard Dean, and Rep. Keith Ellison.

Buckley, a veteran state party leader, had long been considered a likely