Along a coast that sees the annual migration of humpback whales, a geological formation that takes the shape of a whale’s tail.

This huge metal monument is slowly being stripped to its concrete skeleton.

The beautiful baroque library of the Hapsburg empire.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

This strange statue features a bust of the famous composer plopped atop a woman's body.

This 19th century cyclorama acts like an analogue time machine to a different era.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This stucco building in North Africa was the first American-owned property on foreign soil.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

Frida Kahlo's childhood home, now a museum of her life and works.

A terrific purveyor of natural history objects and curios.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A hip bar decorated with walls of golden skulls.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Longest fortress system anywhere in Europe.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.