A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

This historic hub for labor unions has survived the city's changing landscape.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

Two distinctive homes on a New England village green look like a couple of frosted wedding cakes.

A mysterious collection of stones stand outside a small New England town.

Designed as a place for patients to take in the scenery, this tower has a dark history.

One of the first commercially successful anthracite-powered iron-making operations in North America.

The graffitied ruins stand hidden within the Pennsylvania woods.

Outside the Missouri Quilt Museum, this large spool has more than one million yards of thread—and counting.

This solo operation offers the world's only whey wines in flavors such as chocolate-orange.

100-year-old shipwreck you can walk up to at low tide.

A physical catalog of ceramics made by the now-defunct Celadon Terra Cotta company.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A terrific purveyor of natural history objects and curios.

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

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

Half of a waterfall goes into the river while the other half seems to disappear.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

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

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

A Northwoods sporting competition that shows lumber jacks doing much more than cutting down trees.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Legs Inn provides Polish food, a cornucopia of Native American artwork, wood carvings, and mounted deer heads.