Hoover Dam

Hoover Dam resides on the border of Arizona and Nevada. It dams up a portion of the Colorado River, creating Lake Mead out of what was once Black Canyon. Route 93, which connects Las Vegas to Phoenix, takes one past the dam and over the Colorado River. There's parking right off the freeway that allows one to walk out on that bridge and gape at the dam. Here are some images from that walk:

Driving south on Route 93, one comes across an overlook from where one can peer at section of the Colorado River winding its troubled way to Lake Mojave: