These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The absurd creation is a compulsory destination for selfies in Buffalo.

Buffalo's abandoned concrete grain elevators are getting a second life.

This Frank Lloyd Wright summer house was designed along Lake Erie as a retreat for a client's wife.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Known as "The Dome" this is the world's largest open air geodesic dome.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

A forsaken wonder in the middle of the East Side neighborhood.

A museum in the heart of Virginia peanut country devoted to the humble goober.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

This icon of the Atomic Age now lays dormant.

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

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

A wondrous old library overlooking the nation's capital.

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

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Home to items never before seen by the public.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

The institution is sitting on a goldmine of 21,000 paints, varnishes, pigments, and primers preserved for posterity.