A tiny memorial for the year the Connecticut River almost destroyed New England.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

These unusual rooms on wheels are holdovers from the 1960s.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

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

America's first federal monument.

Every drop of D.C. tap water flows through this old waterworks.

Stolen goods adorn the organ at Old North Church.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The romance of early commercial flight still fills this Art Deco destination.

The span is crooked and made from two older recycled bridges.

These abandoned waterworks are crumbling into the Potomac River.