New York City's only preserved family home from the 19th century.

Nikola Tesla's former home contains an homage hidden from plain sight.

An artist's cute bronze subway sculptures belie his violent artistic past.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

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

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Elevated freight railway turned wildly successful urban park.

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

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

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

Hundreds of antiquated typewriters and office machinery show the technological evolution of business.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

Hut with supplies for shipwreck survivors.

Resonating tubes make music from highway overpass.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Books you don’t need in a place you can’t find.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

A historic bridge with a lovely acoustic anomaly.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Museum dedicated to awful artwork.