In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

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

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

University City's quirkiest resident lives in a park named after its first.

It's said this was once the home of King James V's pet lion.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

This statue honors the author's groundbreaking family story.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The location where the American Revolution ended.

One of the world's oldest continually operating bookstores.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A trompe-l'oeil statue honoring the first guide dog in North America.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

The mosaic Star of David at the front of this store hints that it's no ordinary Italian grocer.

Famous church recognized for both its unique design and disciplined monks that live according to the Benedictine discipline.

A commemoration of over 150 of St. Louis's favorite sons and daughters.