Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

Toxic waste disaster that founded the Superfund program.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

An abandoned stretch of highway, deteriorating next to the operational one.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

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

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

Outsider art meets paleontology at this roadside reptile repository.

An astounding collection of medical specimens, including bits of President Lincoln.

A white oak with property rights.

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Remnants of a storybook amusement park hidden behind a strip mall.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Eighteen miniature death-scene dioramas.

Bizarre Cavern.

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

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Exact replica of the ancient monument, but much, much lighter.

A piece of outsider public art accompanied by a strange urban legend.

A monument to the sheer amount of oddities one can collect over a lifetime.