The last stop in southeast Russia.

Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This extravagant villa built by a Burmese merchant is part pagoda and part European mansion.

The tragic heiress Barbara Woolworth Hutton built her seventh husband this Japanese-inspired palace in Mexico.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Turntable anonymously received orphans, alms, and groceries.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

One of the most acclaimed eateries in Arkansas is a two-table diner on the ground floor of a family home.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

A magnificent collection of imperial armor and weaponry.

Spend the night in this formerly abandoned traditional Scottish village.

A rustic place to spend the night, complete with amazing quiver trees and outsider art.

Thousand-year-old trees tower within one of the world's only inland temperate rainforests.

An out-of-place grove of sequoias thrives in northern Spain.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This Transylvanian church has changed its denomination four times.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

A crumbling watchtower and a lighthouse overlooks the site believed to be the Sirens' cliff in the "Odyssey."