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

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An underground city of salt.

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.

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

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