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

The ancient tomb acts as a calendar that keeps perfect time.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

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

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

A second generation sun-powered marvel lights up the night.

The colorful, smiling concrete silos of Vancouver.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

An ancient Egyptian temple in the middle of Madrid, Spain.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The modern birthplace of Irish freedom.

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

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

What happens when a sculptor has to find a way around a 100-year-old copyright.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This bridge was constructed from the rubble of the infamous Bastille.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.