An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

One man's labor of love, Amman's oldest home has become a time capsule with its doors permanently open to artists and guests.

These Stalin-era industrial 'death traps' hang lifeless above the city

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Unusual building appears to be haphazardly built from randomly piled bricks.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

A bit of retro transportation flair preserved in the world's largest department store.

Go through the looking glass in Tokyo's Wonderland-themed shop.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A massive sea stack famous for its appearance in The Goonies.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Copenhagen's celebrated theme park and gardens.

Red frames showcase remnants of one of New York's original subway stations.

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A Manhattan office building is home to the world's largest chess board.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.