This massive basalt sea stack stands obtrusively from the rocky coastline.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

Norway has built what may be the world's most beautiful public toilet.

World's strongest whirlpool.

Large military radio station without transmitting towers.

This strange pyramid is a unique feature of the Austrått Manor.

The largest cave in Northern Europe.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

These lamps were created to expel sewer gases after an event known as The Great Stink.

This large, castle-like structure is hidden amid the mountains on the grounds of the Utah State Hospital.

Stretching for 22 miles, the world's longest tree-lined avenue dates back to the early 17th-century.

This ancient burial cave along a roadside is also home to several Buddhist sculptures.

The final resting place of New Orleans' most famous voodoo priestess.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

The only thing sweeter than the potatoes is the canine proprietor of this roadside stall.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

The stunning remnants of this wreck emerge from an otherworldly backdrop of rainforests.

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

The easternmost town in Alaska can only be accessed from Canada.

A former reservoir that was only recently discovered after more than 60 years of disuse.

This rare aquatic phenomenon is one of the more accessible tidal bores in Morecambe Bay.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.