Dedicated to extinct passenger pigeons.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

This estate on the banks of the James River was home to a Founding Father, two presidents, a famous bugle melody, and what some say was the actual first Thanksgiving.

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

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

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

An abandoned textile mill that is now home to art and concerts.

This taxidermy horse was a Civil War hero.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

At 207 feet, one of the world's longest continuous escalators.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

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

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

The narrowest house in America is seven feet of pure spite.

The revival of a classic Art Deco theater.

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

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

Home of the only civilian casualty at the Battle of Gettysburg.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The local community brought back this land to transform it into a nature preserve.