This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.

Radioactivity still cause for concern at this urban explorer's paradise.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

An essential stop before plundering, BYO Cutlass.

Tiki luxury on Nob Hill.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Canada's subterranean Cold War museum has doubled as a movie set.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

This was one of the first (and last) university-built and operated nuclear reactors.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Little Red Lighthouse under the George Washington Bridge.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

The former hotel where Tesla invented the radio.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Bowl in splendor, if you're lucky.

A hidden "place of interment for gentlemen."

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

One of only two commuter aerial tramways in the United States.

Read a book next to a Midtown waterfall.