Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The world's longest known cave system.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

An art deco ice cream shop covered in vintage train station tiles.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Decrepit Victorian public lift is a white-knuckle ride.

Regency-era excess on the English Coast.