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

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

Designed to commemorate the king's coronation.

The East Village tenement from the cover of Led Zeppelin’s 1975 album has a tea shop on the ground floor.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

View roughly 7,000 books amassed over decades by the author and avid bibliophile.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Vermont's hills are alive with the sound of music at this historic hotel.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

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

The early 20th-century home features cutting-edge technology of the day, such as ammonia refrigeration and needle showers.

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.

A surrealist timepiece by the artist of melting clocks.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The narrowest street in Paris.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Notorious artist squat renovated into legal studios.