A museum which takes visitors to the côté obscure of Paris.

A chaotic collection of coin-operated slot machines designed to delight and disturb in equal measure.

This nondescript building hides an entrance to an underground nuclear tunnel system.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

This amazing 15th-century mural remained hidden in plain sight for centuries.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Giant, friendly pelicans in Central London, the most unlikely of places.

2,000 barrels of aging beer hidden in a warehouse at the Brooklyn Navy Yard.

One of the few Glatt kosher delis in the United States is a cornerstone of its Hasidic neighborhood.

HBO series' stage tucked away in a Greenpoint lot is the largest theatrical set of its kind in the United States.

Head past the aisles of tropical fruit and imported candy at this bodega to discover a hidden, weekends-only taco stand.

This nostalgic blast from the grooming past is also a working barbershop.

The cuisine at this Sheepshead Bay spot tells the story of a displaced Muslim Chinese community.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

This small New York museum celebrates the mountainous artwork of a Russian mystic.

An exhibition space dedicated to American outsider art created between the 18th and 21st centuries.

Offbeat arts organization that hosts exhibitions, events, and explorations.

Bowl in splendor, if you're lucky.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Nikola Tesla's former home contains an homage hidden from plain sight.

Building owners can take out tiles for free at this repository for historic building materials.

Topless shrine of northern Ghana.

The souls of the dead have made these Ghanese crocodiles shockingly docile.