Final resting place of Typhoid Mary.

All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

One sculptor's lifelong war game is the largest and longest running miniature campaign in history.

A towering cemetery monument honors a man who threatened to expose the Freemasons and paid with his life.

The humble fort that saved Washington.

A monument stands to the famous suffragist who penned the declaration for women's equal rights, including the right to vote.

Two mermen, eternally spitting into each other's mouths.

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

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

A gazebo that inspired the fifth episode of the "Twilight Zone" still stands in the creator's hometown

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

Three acres of mythology-inspired sculptures are visible from the highway.

The "Skinny House" is made from scrap, salvage, and a neighbor’s kindness.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

A former connection to City Island, it has been abandoned since the 1930s.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

This art center is way beyond your average pumpkin-carving operation.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.