After nearly 60 years, there's still a bear at Paddington Station looking for help.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

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

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

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

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A Wild West jailhouse that slid down the mountainside.

A building so large that it has its own weather.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A bit of retro transportation flair preserved in the world's largest department store.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A popular European tradition makes its way to the states on one of America's most famous bridges.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The site of the climactic scene from the classic horror film is now a historic landmark.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The world's largest military aircraft cemetery.

Limestone caves with spectacular showcase chambers.