A much-maligned monument to teetotalism.

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

See some of the world's greatest racing horses at this idyllic thoroughbred breeding facility and garden complex.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

This erect, phallic geological spire wasn't always named so domestically.

This black shoreline is made up of exploded lava particles.

A tunnel of hardened lava along Maui’s famous Road to Hana.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The first declared National Monument in the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A cemetery housing wild west legends in South Dakota.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This historic Victorian hotel has a scandalous history of affairs and murder.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Ancient pueblos built into the base of a natural canyon wall.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.