This graveyard contains markers and monuments dedicated to some of the darkest chapters in Washington's history.

Seattle's super-sized cowboy apparel once belonged to a themed gas station that wrangled in herds of tourists.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A giant Troll lurks under one of Seattle's oldest bridges.

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

A memorial to a shareholder activist feared by CEOs around the United States.

A building shaped like the Army Corps of Engineers logo, because why not?

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

An eerie, decaying ghost town destined to fade into the forest.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

One of the only memorials dedicated to journalists who died in combat.

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

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

A miniature golf course crafted inside the world's largest simulated cave.

The Home and murder site of the witch of Rehmeyers Hollow.

A whimsical, but often overlooked clock in Park Avenue.

This jail which was in service for over a century is now open for curious visitors.