This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A restaurant and observation deck built in a unique broadcasting antenna.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

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

A fascinating insight into daily life in the Eastern Bloc.

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

The last bastion of Roman presence north of the Alps looms over a German town.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

A small but immensely extravagant palace built by the "Night King."

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

Two bronze wolves atop this large rock honor the "Wolves of Tuscany" brigade of World War I.

Europe's only Temple of Mithras located in a natural cave.

This beautiful 14th-century castle perched on a promontory overlooks the Bay of Trieste.

Meet the oldest inhabitants of this Italian hamlet, a series of oddly preserved mummies.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

The largest civilian satellite control center in the world is located in the middle of a drained lake.

What looks like a link in Gondor's early warning system is actually a centuries-old Italian fortress.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.