The largest burial mound in the United States holds the remains of prehistoric West Virginians.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

All that remains of a gigantic earth-moving machine.

An office built to look like a giant basket.

Rare recess caves fill this unbelievably beautiful Ohio park.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The mounds at this site were reconstructed with the help of archaeologists and historians.

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

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

The design of this modernist church was revolutionary when it was constructed in 1942.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

The highest point in Maryland is only accessible by hiking through another state.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

The unusual medical inventions of the man who gave the world Corn Flakes.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

This Old Testament garden features 100 plants from biblical times.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

There aren't too many operational funiculars around, but Pittsburgh has two!