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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

An underground city of salt.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Real bones which are said to have belonged to a Polish dragon.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This man-made mound monument was built out of soil from all across the Polish empire.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Too much gossip or just missing curfew could land you in here for a couple of days.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

These fantastically named natural pools look like something out of a Scottish myth.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

It is against the law to obstruct the view from the top of this English burial mound.

Pop culture has helped to keep this iconic British building from being destroyed.