There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

This translucent sculpture represents a quintessential component of New York City's skyline.

A notorious punk house turned co-op.

This miniature village stays behind in the Breuer Building, even as the museums around it come and go.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

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.

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

One of the oldest carousels in the United States is still running in the coastal village of Watch Hill.

House used in the 1971 horror film "Let's Scare Jessica to Death."

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

One of the oldest, tallest, and most haunted lighthouses in America.

A massive sustainable farm designed by the mastermind behind Central Park.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

These ancient sacred grounds granted amnesty to those who managed to reach them.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.