Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

A semi-scholarly approach to sex.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

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

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

New York's oldest magic store.

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

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

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

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

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

The restored and active Victorian-era final resting place of San Francisco.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This shop specializes in oddities and Victorian-inspired wonders.

Where Cusack's record store from the film "High Fidelity" was located.

A hot dog stand where the heads are just as hot as the dogs.

Cemetery featuring rare glass-fronted columbarium.

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

Pizza with a side of fine art.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.