In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

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

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

A 300-ship graveyard, with a few still visible at low tide.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

In a forgotten Central Valley industrial park lies the busiest railroad junction in California.

Giant jewel-toned statues fill the grounds of this Cambodian Buddhist temple in California.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

A majestic hotel for dreamers rises from the center of a fairytale wood.

Sip cherry liqueur at a bar dating back to 1840.

One of the largest Roman settlements in Portugal.

This crumbling Portuguese ruin overlooks the populace it once ruled.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Perhaps the most spectacular grotto along the Algarve coastline.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.