Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

A concrete mushroom that divided Stockholm residents for nearly a century.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Inside this church, a monument honors the first burial site of the famed philosopher.

One of the world's oldest continuously operating meteorological stations sits on a hill in Stockholm.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This elaborate towering structure was once famed for its revolutionary height.

This departure gate in Austin's airport sends travelers to over 120 imaginary destinations.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Temporary Burning Man sculpture made of two 18-wheelers.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

The best Tiki bar in Las Vegas.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.