Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

A Nesting Doll of Churches.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

An unusual round church in London with a Templar past.

One part local history, 99 parts gruesome haunted house.

Only a handful of these gorgeous historic waterwheels remain but even those are in danger from local unrest.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Cold war icon and onetime "hole" in the iron curtain.

The most visited, and possibly most controversial, museum in Germany.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An old department store turned Nazi prison turned artist commune.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Three bridges and one giant canyon make up this fantastic Spanish settlement.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

Enormous statue of the Emperor of the Mongols.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The world's biggest floating museum in Gothenburg, Sweden.

It houses the remains of a 17th-century version of the Titanic.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

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