The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This incredible narrow-gauge mountain railway was created by a ceramic artist.

A network of fortifications that never saw conflict.

Inside this faux cave, visitors can learn how some of their favorite fantasy characters were created.

Home to some of the world’s darkest skies, this project blends ancient Māori culture with world-class astro tourism.

A perfect turquoise lake colored with glacier dust.

Tubing through a cave lit with glowworms is a magical underground experience.

One of Auckland's oldest cemeteries was partially demolished during the construction of a major highway in the 1960s. 

In an Auckland neighborhood, looming chopsticks lift noodles from the sidewalk.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Paris' linguistic guide to the international language of, yes, love.

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

Notorious artist squat renovated into legal studios.

France's most famous cemetery, with some of its most curious tombs.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

A steampunk airship "floats" above Hamilton Gardens delivering plants and compost.

New Zealand's only running funicular railway.

These two delightful animal-shaped buildings host a visitor center and wool shop.

One of the world's steepest streets seems to have houses sliding down it.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.