Saturday commemorates the 89th anniversary of the Hoover Dam's completed construction, considered by most experts "a modern miracle" and one of the most visited sites in the world. The 726-foot ...

Everything to know about seeing Hoover Dam, including the security checkpoint, whether there's a lot of walking and how to get dam-tour tickets.

A year shy of its 90th anniversary, experts still marvel at the construction of the Hoover Dam, one of the most visited sites in the world.

Walking across the dam is relatively easy and offers scenic views. The guided tours require more walking, including stairs, elevators and tunnels. Paid parking close to Hoover Dam costs $10.