The eerie remnants of an ancient forest were hidden under the sand for centuries.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A giant Troll lurks under one of Seattle's oldest bridges.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Fascinating town where normal life interfaces with the occult.

This astronomical clock is the second oldest in England.

A dark Victorian well house now plays host to mystical waters and pagan shrines.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

The oldest residential street in Europe also features an optical illusion.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

This historic building displays the remains of a victim of the devastating 14th-century plague.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

Historic funicular railway, believed to be the shortest railroad in the world.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The ritual has been performed uninterrupted for nearly 700 years.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.