Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

Before the electric telegraph, a chain of stone towers carried messages across France.

There has been an astronomical clock on this spot since the 14th century.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Model Trains and Much More in Hamburg.

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

The "Prussian Versailles" that is as glorious today as when it was built.

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

A monument to the "father of modern warfare" Gustav II Adolf.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.