Model Trains and Much More in Hamburg.

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

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

One of the most controversial statues in Romania is an emperor with no clothes.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

The biggest museum dedicated to insects in North America, one of the largest in the world.

A former suicide bridge is now accumulating symbols of love instead of a body count.

Not quite the cultural gateway between China and Sweden its designer imagined.

A nightly tradition fills the streets of Flogsta with a collective scream.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

3,000 market stands in five former Zeppelin hangars.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Romania's triumphal arch looks out over Bucharest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

An eerie, derelict amusement park in Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

This trio of stone spires claims to be the only preserved medieval execution site in Europe.

The second oldest anatomical theater is housed in a museum of curiosities.

Sweden's "good old days" painstakingly re-created in a model village.

Last remaining nuclear missile base in Ukraine.

This attraction was abandoned after the Chernobyl disaster.