An apparition of Virgin Mary in Herzegovina.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

Bridge that died in war and was resurected.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The topiary maze at the Habsburg hunting lodge.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

Under the desolate and windswept northern coast of Barbados stands a small oasis filled with sea anemones.

This cemetery features modernist statues as strange as its name.

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.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Da Vinci's equestrian statue, 500 years in the making.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

A once-luxurious, now abandoned hotel in the Italian Alps.

An unsettling painting of three faceless sisters that is surrounded by history and legend.