Take a walk in a recreation of ancient Rome.

This mine is home to the largest man-made hole in Europe.

A natural wonder in south Denmark.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

The prototype for all Nazi concentration camps.

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

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

An air of mystery pervades this modern-day singing Stonehenge.

WWII rocket launchpad in rural Germany and site of operation backfire.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

This futuristic building is yet another architectural wonder in Dubai.

Jumping-off point for a climb up Mt. Everest is the most dangerous airport in the world.

Last stop before the top of the highest peak in the world.

This historic square in Nepal is home to temples dating back to the third century.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

The world's oldest rose is so tough it survived being bombed in World War II.

The world's largest frame offers spectacular views of the city's past and present.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.

The world’s largest LED display, built over an F1 race circuit.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.