The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

"We Seceded Where Others Failed."

This charming woodland trail is peppered with poetry.

A vast collection of rare, historical, and vintage supercomputers.

A piece of John the Baptist in the American heartland.

The peaceful gravesite of a rugged wild west gunman echoes the touching story of his last days.

World's largest herd of white deer populate a former U.S. Army depot.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

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

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

Quite possibly the last cross all humans will ever see.

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 privately owned cemetery that holds room for Washington's finest when they step down from life.

Flip your own pancakes in this old sugar mill within a Florida state park.

Recovered from the brink of extinction, at home in the Financial District.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

This locally-famous crevasse in New York State is icy all year round.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Georgia's highest point was given its strange name thanks to a simple translation error.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This (occupied) house is 10 feet wide and full of spite.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.