A monument to the groundbreaking environmentalist sits near the place where she first experienced the sea.

This miniature museum is home to a vast array of insects.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

An eccentric inventor's castle home with its own indoor weather system.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

A subterranean haunt where wine and homemade biscottis are always on the menu.

This storybook New England home is actually a decommissioned lighthouse.

An architecturally unique lighthouse that had to be lifted up and moved to avoid falling in the sea.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

A cable-suspension footbridge that hangs high above the Mill River.

This labyrinth was designed to help visitors focus and meditate.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

A lighthouse on this West Virginia lake started as a joke, then the forces of nature helped make it a reality.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

A frozen oasis lies beneath the scorching New Mexico desert.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

This small-town opera house has appeared much more in national culture and history than its charming setting might suggest.

This museum explores the history of the book, from scrolls to mass-produced objects through tools, stories, and massive cast-iron binding machinery (some of it operational).

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

A train tunnel that was made obsolete by the dam it helped create.