A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

A 12,000-year-old bog boasting rare plants and fauna.

Harry Potter’s Hogsmeade Station is also a charming blast from the past situated in North Yorkshire.

The oldest covered railroad bridge still standing in the United States.

Inaccessible by foot, Japan's most secluded train station sits in the middle of nowhere.

A historic coal mine that doubles as a museum and tourist attraction.

A seaside castle complex that stood through centuries of conquests.

On the outskirts of the small village, an abandoned grassy field glitters thanks to the white stones of an ancient structure.

A palace-fortress ruin in Indonesia complete with legends of two magical tigers, eight bathing angels, and a wish-granting cannon.

For years, the remains of this ancient Roman fortress were hidden under an orchard.

This sacred, circular cave is lined with pools so clear and still that it's hard to tell where the water begins.

The largest game reserve in Africa is home to thousands of species but refuses to house humans.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

Two World War II aircraft lie within the jungle around this abandoned runway.

The 25-million-year-old cavities have perplexed people for decades.

The longest manmade tunnel in Queensland is now a beautiful trail, home to a special colony of bent-wing bats.

The main feature of these gardens is a rarity in the northernmost part of Scotland: trees.

Legend has it this historic port was a popular hideout and smuggling spot for pirates.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.