The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

A South African bar inside a hollowed out 6,000-year-old Baobab.

The start of the group that straightened the teeth of a nation.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

A Red Hook dive bar that is holding onto its roots.

Obscure and obsolete publications are given new life as works of art.

The humble fort that saved Washington.

Where infamous mobster and leader of Murder Inc. Albert Anastasia made his home.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

An unconventional space for art and science housed in a massive old warehouse.

Four cars from the old system were once on display, but were removed in 2014.

Micro-distillery in Brooklyn produces New York’s first homemade rum since Prohibition.

Risk arrest while partying to fund art.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

Sunset Park's Guatemalan community knows to head to the back of this bodega for a taste of home.

This micro-industry of Latino cuisine along Red Hook's Ball Fields represents a victory in a food fight with the city.

Con Edison’s exotic and heat-loving pests.