This historic stone bridge has an entire neighborhood clinging to its sides.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The final resting place to 300 Victorian-era pets hides inside the city park.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

According to a local story, this tree's blossoms signal the end of war.

A crumbling hospital from the 1850s on Roosevelt Island.

A semi-scholarly approach to sex.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

This site honors an Israeli cargo ship that was destroyed by the government in 1948.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Hamburgers are intensely proud of their tunnel beneath the river.

Model Trains and Much More in Hamburg.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

An architectural oddity hides in plain sight on this iconic London bridge.

A fantastic castle rumored to be the birthplace of King Arthur.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.