The oldest house in Washington, D.C. wasn't originally constructed in the nation's capital.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

This home is steeped in history from, George Washington to George Corwin, High Sheriff during the Salem Witch Trials.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

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

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Millions of numbers carved in glass represent the tattoos forced upon victims.

A tunnel with windows, so you don't miss out on the impressive views.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

The unusual patterns in this rock formation result from two distinct modes of weathering.

This small memorial is dedicated to the Perryville State Prison firefighters who perished fighting the Dude Fire in 1990.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

A replica of the flagpole that gave a frontier town its name.

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The oldest continuously occupied public building in the United States.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

An empty mine that some believe will suddenly be filled with fortune and treasures at the end of the world.

This historic lighthouse was well known for the large number of women who served as its keeper.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

The only surviving fragment of the lost Narragansett Pier Casino.