The fairy tale castle of the "fairy-tale king."

This "floating railway" is one of the world's oldest monorail systems.

This painted Lego bridge is the product of over a century of locomotive history.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This Communist-era residential block is one of the longest residential building in Europe.

Modern art commemorates one of the first military actions of World War II.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

A World War II torpedo launch station abandoned off the Polish coast.

This antique thermometer honors the creator of the first universal temperature scale.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

A haunting deserted hotel is a favorite with artists and photographers.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

The world’s narrowest house makes for an awkward, four-foot-wide living space.