The span is crooked and made from two older recycled bridges.

In the basement of the U.S. Capitol Building is a hidden storage room full of ornate floor tiles leftover from the 1850s.

Home to a vast and influential collection of Shakespeareana.

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

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

There's a crumbling old mansion inside the Smithsonian National Zoo.

An Industrial Revolution-era public work that purified water using nothing but sand.

The oldest continuously operating fish market in the United States.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A wondrous old library overlooking the nation's capital.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Pink, packed sanctuary and home of the world's fullest-time Elvis fanatic.

A decaying building marks the site associated with Emmett Till's brutal 1955 murder, which helped sparking the civil rights movement.

Walk through row upon row of manicured miniature trees at the United States' largest bonsai nursery.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

This racially troublesome eatery thought a new coat of paint could erase its offensive connotations.

This two-room shotgun shack in Tupelo is the birthplace of a King.

A four-hour holy-rolling, Hallelujah-shouting, Southern gospel service, rendered as a country market where "All Is Welcome, Jews, and Gentiles."

William Faulkner kept his beloved estate wild and untamed.

A Muppet museum in small-town Mississippi honors the roots of Jim Henson's most beloved creation.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

That bass was as bad a fish as any angler ever knew.

A cemetery for only coon hounds in northwest Alabama.