The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The oldest landmark of Toronto is a testament to shifting sands.

This massive, ancient stone was disassembled and then put back together again.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

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

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

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A super-sized promotional trick that is now a D.C. landmark.

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

The site of the climactic scene from the classic horror film is now a historic landmark.

Home to items never before seen by the public.