While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

Over time, this castle grew to encompass the entire island.

Open-air museum with a large collection of Soviet-era statues.

A small granite monument marks where the borders of three countries meet.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

This 13th century Gothic brick castle is the largest in the world by surface area.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

This towering statue of Jesus provided internet to the surrounding area.

Structure built from the skulls of vanquished foes.

Bridge that died in war and was resurected.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Yugoslavia's biggest underground airport lies in ruins.

Macabre astrological automaton clock dating to the late 1400s.

Model Trains and Much More in Hamburg.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

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

Several of these strange cone-shaped bunkers can still be seen around the former Nazi headquarters.

A statue of Vladimir Illyich Lenin guards this abandoned building in the "Forbidden City."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This cairn marks the only place where Central European Time, Eastern European Time, and Further-eastern European Time meet.