A painted-over wall in Detroit originally built to segregate a black community from an adjacent white development.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.

House built with over 60,000 glass bottles.

This enchanting forest trail leads to ethereal abodes and a giant bird's nest.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

The city is full of whimsical portals to another world.

A lavender labyrinth so large it’s visible on Google Earth.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Turnip-shaped island just off the Michigan shore in Lake Huron.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

This freshwater spring fills with 10,000 gallons of water per minute.

Detailed facade of a brownstone in Boerum Hill.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

New York City's smallest piece of private property.

The "Seinfeld" diner.

A dilapidated dock tells the story of Titanic's missed arrival.

Faces carved into the cliffs create an otherworldly walking trail.

This hidden stone has absorbed decades of human anxiety.