The curios of pharmacist and collector Henry Wellcome.

A scientific repository of goiters, boils and other ailments throughout Mexican history.

Various forms of phallic art decorate this hill in commemoration of legendary local tragedy.

The intriguing personal collection of a professional demon-chaser.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Mysterious rocks that ring musically when struck.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

An illegally built ramshackle mansion tucked in the middle of Brooklyn is now being turned into condominiums.

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

Arlington Cemetery exhibit dedicated to death and grieving.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A rare view of a preserved Victorian science museum.

Creaky dinosaurs grow in the backroads of Monmouth County, New Jersey.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Remnants of a storybook amusement park hidden behind a strip mall.

A bizarre house filled with an astounding array of collections.