Over the last century, this elegant columned facade has been home to the headquarters of a bank, several nightclubs, and a restaurant.

The largest public collection of roses in the United States.

This small-town pizzeria won the Hollywood lottery.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

A masterpiece of Art Deco architecture hidden in plain sight in West London.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

A unique set of caves that spits waves back out into the ocean.

The competition: breathe deeply as long as you can.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

This lovely pocket park is one of the most under appreciated in D.C.

Art deco landmark on the outskirts of Washington, D.C.

The district's only illusionarium supports free writing programs for local students with every purchase.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

This cheese shop also houses a museum devoted to Dutch dairy.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.