A mysterious "wedding cake" castle in the middle of the urban desert.

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

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

This giant temperature attraction created some giant electric bills.

Quite simply the largest tree in the world (by volume).

These giant metal horses graze on a hilltop near the Montana highway.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

The highest point in Washington state is a volcano covered in glaciers.

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

This medieval village/restaurant perpetually celebrates the year 1376.

The small town of Poulsbo in Washington state is the next best thing to the Kingdom of Norway.

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

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

This former coal gasification plant found a curious second life as a popular public park.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A 1,000 pound brass bell commemorates a time when this small maritime neighborhood was actually its own separate city.

Continuing a tradition of movie magic on the site of America’s oldest continually operating movie theatre.

This gold-winged spire celebrates the first true flight around the world.

Old submarine parts have been converted into faux whale fins.

An errant donkey ushered in a new era of mining in Nevada.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

Singing sand that stands as the final remains of an ancient lake.