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

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

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

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

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

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

Also known as the Founding Church of Scientology.

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

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

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

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

An Industrial Revolution-era public work that purified water using nothing but sand.

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

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.