A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This small-town pizzeria won the Hollywood lottery.

Underground tunnels remain beneath this abandoned mental asylum.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

The Connecticut village named for its subterranean thunder.

An abandoned gun-funded 19th century utopia.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.