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

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

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Fascinating town where normal life interfaces with the occult.

These curious caverns have been home to mushrooms, gangsters, and disco.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This London plaque marks the spot where David Bowie's famous alien made his debut.

This popular bar has been blurring the line between normal and edgy for more than 75 years.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This historic national park is covered in the stunning ruins of red rock pueblos.

A cave's rare beauty held a cavernous secret hidden underground.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The secret city built by the Manhattan Project.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

This replica of the Greek structure is in the heart of Nashville.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.