Built for herding sheep, these tiny winding lanes with medieval origins and distinctive series of narrow turns are charming walkways for humans today.

Alexander Hamilton’s creation caused quite a bit of controversy.

A rare 16-bedroom Qing Dynasty house re-erected on the campus of the Peabody Essex Museum. 

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

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

This 19th-century fountain's namesake animal isn't what you think it is.

Barça football fans might see the insignia hidden in a church window as a divine sign.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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.

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

This Ocean Drive crosswalk has been paved in rainbow colors to honor the LGBTQ+ community and the man who brought pastel to Miami Beach.

This saucy statue once caused outrage among locals.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

Stolen goods adorn the organ at Old North Church.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The massive machine creates cracking displays of indoor lightning.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.