In Rickwood Caverns, visitors can travel hundreds of feet underground and see beautiful formations unique to the region.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

The source of America's longest river is also a historical landmark and the start of a famous nude run.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

Enjoy dishes that founding fathers once ate at this Colonial Williamsburg pub.

World's smallest skyscraper, the product of a remarkable con.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

On the walking path from Monterosso to Vernazza, a small shrine dedicated to feline friends.

The hippo that stands on this university campus was once a drunken flea market purchase.

Is this 47.7-mile stretch of highway the longest straight road in the United States?

The first American woman to win the Nobel Prize in literature came from the foothills of Appalachia.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

This taxidermy scene brings the struggle for survival in the Indian jungle to a quiet corner of a Manhattan museum.

Here be dragons.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

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

The largest piece of cut lead crystal adorned a grave for 75 years and is now the shining star of a glass museum.