This whimsical stacked cabin looks like something out of a children's book.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

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

New York City's smallest piece of private property.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

A hands-on traveling collection of the innovative devices of yesteryear.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

A semi-scholarly approach to sex.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

New York's oldest magic store.

Try not to get slimed in Tribeca.

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

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

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

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

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.

Where the English trapper who faked a First Nations identity bunked with beavers.

The historic home of the pivotal political activist who led the Métis people in rebellion against the Canadian government.

A high point in Vancouver kitsch.