This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

A Ukrainian church canteen doles out hearty fare in an East Village basement.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

This giant temperature attraction created some giant electric bills.

The drama of nature in full effect in this Nevada State Park.

Experience a charming 1930's version of "infotainment."

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

A winding path built in secret on the edge of the continent.

Radioactivity still cause for concern at this urban explorer's paradise.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.