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

One of the most iconic neon ads of former East Germany.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Steadily reminding Czechia of its past.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

The unusually large seat sits atop the base of a ruined temple.

A small square plaque marks a failed assassination attempt that could have changed history.

The scars of World War II are preserved on its walls.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

A giant snail sculpture looking longingly at the German traffic museum.

A stairway to heaven, or to nowhere at all.

An Orthodox church inside a small "Garden of Eden" built by a man who had a vision.

An abandoned train station in Munich constructed for the 1972 Olympic games.

A subterranean display of public art and architecture.

On high feast days, the entire blue-glass front of this modern church opens up to reveal the small wooden church inside.

King Ludwig I's collection of beautiful women.

A carved grave marker from the 2nd century is mounted in the alcove wall of this Bavarian church.

A graveyard and memorial chapel for victims of leprosy.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

A striking public sculpture representing the period of martial law in Communist Poland.

A collection of old neon signs from all over Poland line a secluded courtyard.