One kilometer of thick brass rod laid out before your eyes.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

Commemorating the spot where the famous scientist fed his pigeons.

Unrepaired walls from a 1920 anarchist bomb attack.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

A whimsical, but often overlooked clock in Park Avenue.

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.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

This collection of grinning ephemera has grown from basement to Brooklyn.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Avoid gangster interaction while window-shopping.

The saddest little diner in New York.

This abandoned subway station can still be seen on regular commuter trips.

Three-story slide through the New Museum.

Cryptic messages embedded in the New York City sidewalk.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Bowl in splendor, if you're lucky.

This semi-hidden Manhattan restaurant is based out of a loading dock.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

One man's lifetime collection of tiny objects of wisdom gathered from around the world, on display for public enjoyment.

A thriving artist's wonderland located just 6 kilometers from Korea's DMZ.