This poignant display is now a memorial to these regionally extinct species.

One of the most dazzling dioramas at the American Museum of Natural History is also one of the oldest.

This morbid scene depicts the Darwinian drama of death on the African savannah.

This impressive scene portrays the elusive forest giraffe of Central Africa.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

A controversial magical figure is hidden within a diorama of the city.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

Here be dragons.

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

Recovered suit of a cannibalistic West African gang.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

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

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

Try not to get slimed in Tribeca.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

French sculptor Paul Moreau-Vauthier transformed the site of a 19th-century massacre into a haunting memorial.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

This sprawling, Brutalist estate feels like a city within a city.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

One of the oldest brick structures in Freetown.

The first European-style university in western Sub-Saharan Africa.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.