The stunning interior of this Gothic church is covered in ornate gold details.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

This crumbling Art Deco movie palace in Mexico City has been abandoned for two decades.

By night, this auto repair shop turns into a taquería serving up some of the city's finest al pastor tacos.

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

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

Cathedral carved out of salt, located a mile below the earth's surface.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A celebration of Colombia’s premier contemporary artist.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

A speakeasy takes on Chicago's drinking culture.

A research lab and hands-on museum where visitors can experiment with retro technology.

The clock that sets them all.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

A century-old network of freight tunnels underneath the city's historic business district.

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

Landmark Chicago building narrowly avoided destruction.