Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

This legendary urban waterfall creates a dazzling display of rainbows.

This black shoreline is made up of exploded lava particles.

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

The colonial home of Paul Revere during the American Revolution.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

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

Honoring the star of the “The Bob Newhart Show” which took place in the city of Chicago in the 1970s.

Pay your respects at the final resting place of the man behind one of the best-known names in food.

There aren't too many operational funiculars around, but Pittsburgh has two!

Could it have picked a better place to land?

After covering almost 1.5 billion acres, the survey's still not finished.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This museum was once the home of industry titan Matilda Dodge Wilson.

The settlement of a leading abolitionist who inspired one of America's most influential novels.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

Celebrating the cultural heritage of Kansas’s premier cowtown.

The little-known final resting place of one of America's greatest writers.

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

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.