A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

This massive, ancient stone was disassembled and then put back together again.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The most confusing clock in New York.

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

Avoid gangster interaction while window-shopping.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

A bit of retro transportation flair preserved in the world's largest department store.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

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

More gold than anywhere else, ever.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This Toronto garden collects stares and tchotchkes in equal measure.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

Lost subway station nestled beneath Toronto's busy commuter line.