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

These markers are used to document elevation changes around the famed dam.

A "house to which to flee" for settlers in colonial Pennsylvania.

The oldest surviving presidential residence in the United States.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

One of the first commercially successful anthracite-powered iron-making operations in North America.

On the side of a Virginia highway, a collection of monuments commemorates an 18th-century trek through the Blue Ridge Mountains.

These 20-foot sculptures will help guide you from the local train station to the local sculpture garden.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

A unique sculpture park that specializes in the huge and bizarre.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

The oldest continuously-operated inn in the United States, once owned by Henry Ford.

Journey inside the bowels of this sperm whale sculpture.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.

A small structure built from used railroad ties honors the short term of America's 20th president.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

The Home and murder site of the witch of Rehmeyers Hollow.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 was denounced by many—including Lincoln's own son.

An excursion train traverses a picturesque red-rock canyon along the Verde River.

Step into a pastel time capsule where candy is truly dandy.

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.

A tribute to those that perished during the American Revolution.

A bronze statue of Mister Rogers in the neighborhood where he grew up.