The 28-foot granite map plots the locations of 40 theaters in New York City.

Little Red Lighthouse under the George Washington Bridge.

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

During the holidays, a vintage subway train whisks New Yorkers back in time.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

A hands-on traveling collection of the innovative devices of yesteryear.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

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

The home of the first American-born saint is one of the only curved buildings in New York.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This forlorn park is the result of a failed investment turned tax dodge.

This ancient Hawaiian henge may have been an early star chart.

This black shoreline is made up of exploded lava particles.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

Race through the maze, get your name on the sign.

The inventor of the Coney Island hot dog rests in a grand mausoleum in Brooklyn.

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

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

Final resting place of the immigrant who brought artificial seltzer water to America.

A way to take your secrets to someone else's grave.

A mass grave for victims of one of the city’s worst fires.

A curious friendship between two inanimate ladies.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.