In a crypt underneath this church lies a naturally mummified vicar whose story is surrounded by mystery.

A silly medieval mural preserved on the side of a Viennese house.

A museum capturing one of the world's most famous classical composer's battle with hearing loss.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

A Volkswagen Beetle decorated with millions of beads connects Mexico's past and future.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Twelve natural mummies are displayed in the crypt of this former monastery school.

A secret hotel room can be found inside this clocktower in the oldest city in Austria.

A non-stop elevator ride in Vienna's city hall.

Sample sweets at an Art Nouveau candy shop that's been in business since 1874.

In this Romani neighborhood lies a museum dedicated to the culture and history of the Roma.

A rebuilt Roman city that was once the largest Roman settlement in the region.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Dine amidst exotic plants at this former royal greenhouse.

The winter home of millions of migrating monarch butterflies.

Be(w)ar(e) the moat around this historic Czech castle.

World's second largest particle accelerator, where nature reveals its secrets.

The extremely grey columns of one of Mexico City's most iconic beltways are slowly gaining a bit of color.

This collection of promotional calendars preserves a staple of mid-century Mexican pop art.

Murals made with millions of colorful stones adorn the abandoned building.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

One of the world's richest men bought this former paper factory and transformed it into a mall.