The earliest known map to show America, discovered by accident at a Paris bookshop.

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A vintage video game wonderland in downtown Reykjavik.

The largest whale museum in Europe allows visitors to walk among life-size giants.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Hans Christian Andersen for the postmodern world.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The Boston square dedicated to the dark poet who was born nearby.

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

Civil War Fort on an island in the Boston Harbor.

Budapest's Communist-era statues, banished to the suburbs.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

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

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.