A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

The oldest continuously occupied public building in the United States.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The span is crooked and made from two older recycled bridges.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

The pockmarks across the building's facade are remnants of the Blitz.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

One of the few working locomotive roundhouses in the United States.

The first and only museum dedicated to stained glass and horology opened outside of Chicago in 2017.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This historic square in Nepal is home to temples dating back to the third century.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The mansion home of author Edith Wharton.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.