A submerged archeological park still holds the wonders of a Roman Sodom.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A 66-million-year-old rock formation stands tall over Mumbai, offering stellar city views.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

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

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

The unbelievably opulent home built for an infamous newspaperman.

The remains of the oldest synagogue in Britain lay forgotten for seven centuries, hidden under a humble shop.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

A 1,500-year-old, 3-story subterranean city where ancient Persians took refuge in times of war.

This quiet park's strange sedimentary spires were named after Kodak's color film.

A black and white solution to the Bolivian city's traffic problems.

In this pristine Ecuadorian hippie town, residents remain active well into their eighties and nineties.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

A marvel of Byzantine engineering under the streets of Istanbul.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.