This former factory has been transformed into a technicolor wonderland, where dozens of local artists have collaborated to create a real choose-your-own-adventure experience.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A historic Christian shrine nestled within a spectacular natural cave.

Pilgrimage site for star-crossed lovers.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

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

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Slurp sesame noodles at the third-generation family-run establishment that invented them.

The impeccably spiced roast pork buns at this bakery are worth the wait.

Dine on dumplings at the oldest dim sum restaurant in New York.

One of the only memorials dedicated to journalists who died in combat.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.