The unbelievably opulent home built for an infamous newspaperman.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

The largest falcon hospital in the world, caring for over 6,000 feathered patients every year.

Whitewashed mosque contains the world's largest carpet.

Over the dunes of the Empty Quarter, the mysterious music of the desert.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

Home to items never before seen by the public.

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

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

An enormous and lavish Gothic church in Czechia.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Once America's tallest structure, now a Baltimore landmark.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

A bit of retro transportation flair preserved in the world's largest department store.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.