Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

A wall of chewing gum moonlights as collective art.

Stroll through a wonderland of stupendous moss-covered trees.

At the time of its completion, it was the tallest dam in the world.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

One of the smallest towns in the United States.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One man's ambition created this psychedelic log home.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A modern day curiosity cabinet.

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The world's biggest floating museum in Gothenburg, Sweden.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

Stockholm's narrowest alley is barely over two feet wide.

This chimerical bridge/tunnel appears to dead end right into the sea.