Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The home, museum, and death site of Kodak's influential founder.

Possibly the smallest church in the world floats in the middle of a pond.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

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

A fiberglass jungle, deep in the wilds of the Cleveland suburbs.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

Once a year, at exactly 11:11 a.m., this monument comes to life.

This legendary urban waterfall creates a dazzling display of rainbows.

This blowhole is supposedly caused by a trapped monster.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

A museum dedicated exclusively to the lore and history of ouija boards.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This historic oak tree has been around for over 300 years and might last for 300 more so long as it doesn't fall apart first.

The last street in Pittsburgh that's paved with wood.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.