A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

It was once the base for a series of domestic terror attacks.

Perhaps the most scandalous statue of America's first president.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A hand-built folk art installation covered with messages of God's love.

The world’s largest concentrated solar plant generates as many problems as megawatts.

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.

A couple turned their front yard into an artistic masterpiece.

The Giant Lemon of Lemon Grove.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.