This 16th-century mosque is the hallmark of the African architectural legacy in India.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Experience what life was like in Ireland during the Viking and medieval ages.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

Over 315,000 preserved amphibians and reptiles in jars.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

This shop specializes in oddities and Victorian-inspired wonders.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

A UFO scrapyard in the California desert.

Explore the quarry where the marble was sourced for Michaelangelo's David.

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

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A Swiss board game museum housed inside a picture-perfect castle.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

Ernest Hemingway was the first to sign this colorful wall covered in thousands of celebrity signatures.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.