Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

This outdoor gallery of sculptures along the East River was once a landfill.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The "Seinfeld" diner.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

100 massive sculptures in the Hudson River Valley.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

The ruins of a medieval monastery named after a type of tree.

This natural sea arch highlights Ireland's rugged coastal beauty.

Immortalized in bronze, this frazzled student will be glued to his screen for centuries.

Montreal's colorful subway station shows its support of the local LGBT+ community.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.