Where two rivers meet—but don’t mix.

Site of James Cook's historic observations of the 1769 transit of Venus.

An ode to the friendship between four Pacific Rim countries.

A hidden courtyard houses early 20th-century plaster masterpieces.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The world’s oldest active sailing ship.

An eerie natural formation that looks right back at you.

With beautiful views and every detail perfectly considered, one of the geniuses of modern architecture built himself the perfect home.

The self-proclaimed gateway to the Extraterrestrial Highway.

An eatery for UFO seekers on the Extraterrestrial Highway.

This sign designates the road that leads to the infamous Area 51.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

These small, triangular, colorful houses are a staple of Madeira Island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

This is the oldest Roman-made bridge in the city still existing in its original state.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A 20-meter (65-foot) robot towers over Tokyo Bay.

Nine Gardens in one—with tea service.