The only mine for rare earth elements in the United States has been intermittently active since the 1950s.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The world’s largest concentrated solar plant generates as many problems as megawatts.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

America's only nuclear missile silo open to the public.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This giant steer-skull edifice refuses to die.