Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

The last remaining tollhouse in Michigan built during the 19th-century plank road craze.

The plants form a living library and laboratory for researchers and students at Michigan State University.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

An outlandish shoe shaped house built by an eccentric millionaire.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Japanese national treasure originally built in 593 CE.

The oldest academic institution in Japan provides a glimpse of university life during the days of the samurai.

The first of Lancaster's "rural cemeteries."

This iconic Lancaster everyman has been reading the same story since 1980.

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Home to items never before seen by the public.

An overlooked memorial honoring the local Washington residents who died in World War I.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

The narrowest house in America is seven feet of pure spite.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This cannon dating to 1755 has stood guard at this suburban intersection since 1915.

A former major munitions plant that has been converted into a sprawling art space.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.