The now-overgrown beach resort was once frequented by Yugoslav military elite.

You would never come across this tiny green oasis if you didn't know it existed.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

Relive a Polish uprising via an enormous, century-old cyclorama.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

This towering statue of Jesus provided internet to the surrounding area.

The center of this Polish border town was so thoroughly wiped out in World War II that only the foundations remain.

An underground city of salt.

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

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

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

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

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

A memorial to the beloved brown bear that served in the Polish army during World War II.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

Krakow's own version of the Hollywood Walk of Fame.

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

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

Inside this Krakow church, an explosion of psychedelic color.

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