This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A scattered trail of street art adds a pop of color to the city's stark structures.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

Microscopic scenes; some call it novelty, some call it art.

Two stunning 17th-century libraries and a cabinet of curiosities.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A church of bones, decorated with 40,000 human skeletons.

There are owls with glowing eyes in Herald Square.

The 28-foot granite map plots the locations of 40 theaters in New York City.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

There must be a pun in this haystack somewhere...

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.