Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Ride the subways of yesteryear.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A semi-scholarly approach to sex.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

Australian museum dedicated to human health and lack thereof.

This grim museum collects artifacts and evidence of some of the most sensational antipodean crimes.

Nature is leading a successful mutiny on this century-old freighter.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

An emporium for the weird, creepy, rare, and just plain gross.

Is this the most Portland place ever?

A butcher shop in Minneapolis has all the meats and cheeses you’d expect from any of its kind—except that all the products are vegan.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

One part local history, 99 parts gruesome haunted house.