The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

This now-deactivated naval base defended the Florida coast for centuries.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

The most loyal of little dogs, or a Victorian era publicity stunt?

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

This legendary urban waterfall creates a dazzling display of rainbows.

Ozymandias’ time-keeping temple.

This two-room shotgun shack in Tupelo is the birthplace of a King.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

The largest retailer of seashells in the world.

This remote British Imperial telegraph relay outpost drove men insane.

This beautifully restored fortification kept the city safe for centuries.

A sanctuary for sickly, stray, or wounded donkeys.

This historic Victorian hotel has a scandalous history of affairs and murder.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

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

This historic patch of real estate offers a glimpse of colonial Boston.

Historic medieval fortified city in southwest France.

This sandstone mansion was the home of two of Oregon's most important pioneers.