One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Historic psychiatric asylum and most-filmed location in the Great White North.

This expansive bridge in the Canadian wilderness was originally just built for friends.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A crumbling hospital from the 1850s on Roosevelt Island.

Tucked in the back of this amazing antique store is an important piece of medical history.

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

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

A terrific purveyor of natural history objects and curios.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

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

A display of magnificent stained glass windows is the first exhibit of its kind.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Former meatpacking facility turned vertical farm and sustainable business complex.

Cemetery featuring rare glass-fronted columbarium.

This historic hotel invented the chocolate brownie.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

A lush green oasis in the middle of Chicago.

An enormous park-like oasis, full of famous Chicagoans' graves.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A speakeasy takes on Chicago's drinking culture.