The site of the deadly Triangle Shirtwaist Factory Fire.

The oldest living tree in Manhattan comes shrouded in sinister legend.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

Check out the Heidelberg printing presses in the workshop of an artist known for documenting the natural world on greeting cards.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

The park is home to the United States's only still-operating Dutch windmill.

A historic 1929 art-house cinema that features independent, classic, cult, and foreign films in an atmospheric setting.

There's more contention than one might expect from cherry pie pans.

Talula the swan has been welcoming visitors to Elk Rapids, Michigan, for more than four decades.

Easily overlooked in favor of the wineries that dot the region, this blast from the past is equally worth the visit.

This picturesque beacon was built to keep boats safe shortly after the Civil War.

Nicknamed “The Mushroom,” this unique water tower has been featured in several iconic movie scenes.

Water and windows define this defensive Italian well.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

When this 400-year-old fountain fell into disrepair, officials covered the mess up with what looks like a giant soup tureen.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

The Pope’s secret escape route.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

A statue representing a lost Roman profession that was vandalized for centuries.