Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This store decorated with Japanese and underground pop culture items has been the centre of Barcelona alternative fashion scenes for more than a decade.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

A long strip of fossil-filled limestone makes up this natural bridge above a rushing stream.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

A science fiction-inspired apartment building designed by a famous Spanish architect.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

The site of the world's first modern seismometer.

A sculpture commemorating the "world's best mouser" in what is likely Scotland's longest-running distillery

The oldest wind turbine in Europe, constructed by a group of friends in 1932.

One of only two places in the world where two rivers cross each other without the waters mixing.

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

Inside this Krakow church, an explosion of psychedelic color.

This fairytale medieval church in Poland originally spent centuries in Norway.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

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

This open-air museum was originally a World War II testing ground for German missiles and rockets.