A Roman-style column in Oregon hides a spiral staircase inside.

A modernist landscape of water and sci-fi concrete.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.

One of the indelible moments of the American Revolution took place at this location.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

Ice cream stand, snack bar, and time capsule of milk conveyance.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

Home to the only outdoor municipal elevator in the United States.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

An emporium for the weird, creepy, rare, and just plain gross.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Elevated freight railway turned wildly successful urban park.

This small-town Connecticut restaurant gives each diner a free book from its vast library.