This former Texas landfill is flush with 300 million-year-old fossils, all fit for the taking.

A symbol of Texas pride.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The world-record holder for the longest bridge stretching continuously over water.

This groundbreaking 16th-century map is known as "America's birth certificate."

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

An aptly-named street near the birthplace of the modern LGBT rights movement.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

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.