This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

If you ever wanted to own an actual piece of Disney World, this is the place to shop.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Ruins of a Carnegie family mansion on Cumberland Island.

The graves in Florida's oldest Black cemeteries are marked with shells, stones, and mementos of the deceased.

Location of a reliquary containing bone fragments of 18 saints.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The oldest continuously inhabited street in America.

"A hideous albatross in the Hudson River Valley."

The remains of what was once the world's steepest passenger funicular.

The notorious headquarters of a corrupt political machine.

Cryptic messages embedded in the New York City sidewalk.

A good place to research the Freemasons, esoterica, occultism, and hermeticism.

A hidden "place of interment for gentlemen."

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

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

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.