The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

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

An astounding collection of medical specimens, including bits of President Lincoln.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

The world's oldest continuously operating airport was founded by the Wright Brothers.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

A relic of FDR's brief foray into utopian urban planning.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A priceless collection of the Nation's cryptologic history.