A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

This restored log building was one of the first toll booths for travelers along the Northern Turnpike.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

A genuine Tudor manor transported piece by piece from England.

The skeletal white beams stand as a monument to religious dissent.

This historic, one-acre island is the only legal place to camp in the city of Richmond.

In an effort to escape the horrors of slavery, one man mailed himself to freedom.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

America's post-nuclear-attack chambers of Congress.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

The world's largest fully steerable radio telescope.

After several weeks of radio silence, this abandoned oil tanker washed up on a remote beach in Liberia.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Unique collection containing a wide and curious range of contraceptive items.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

Home to items never before seen by the public.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

This public space is speckled with the eerie remnants of a defunct amusement park.