San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.

America's first wax museum opened in 1948.

One of the oldest, tallest, and most haunted lighthouses in America.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A tribute to Ponce de Leon's supposed quest for eternal youth.

This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.

A mysterious spot where the laws of gravity seem not to apply.

Iconic rock formations that allow for exploration during high or low tide.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

The site where chief Miantonomo of the Narraganset people was captured.

Made of bronze and wearing a blue gown, this lady sat in the same location in the Yantic Cemetery for more than 119 years.

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

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

America's most famous piece of self-built architecture.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.