There's something in the air as history repeats itself at this museum dedicated to the Swedish pop band.

Opened in 1787, this old-world treasure is said to be the oldest restaurant in Copenhagen.

A memorial dedicated to the 29,000 Istrian freedom fighters of World War II.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

This sculptural representation of an Andersen fairy tale had to be pushed away for being too grim.

An excavation site that signified Hercules in Pula, and a glimpse into the city's Roman history.

These hilariously laughing bronze figures lampoon empty promises while encouraging civic engagement.

According to local lore, a flying dragon was blinded by a lighthouse and crashed, leaving a permanent mark on this island rock.

This colossal hiking boot, once built for a scout jamboree, serves as an observation tower and barbecue area.

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

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

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

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.

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.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

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

An underground city beneath Krakow's postwar socialist utopia.

Where visitors can play more than 150 retro arcade games.

A Soviet era flat that refused to conform to the dull gray standards.

Learn the fine art of making a centuries-old treat at this hands-on food museum.

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

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.