An abandoned dollhouse factory.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

New York City's smallest piece of private property.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Belly up to the bar in Cowtown, don't forget to buy some boots.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

A tribute to the couples who brave long periods of separation during wartime.

All that remains of this Massachusetts town, demolished in the name of progress, is a stone marker.

A rock outcropping left by a glacier that made itself useful throughout the centuries.

The homestead of American patriot John Adams.

The world's largest piece of copyrighted artwork.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This small-town pizzeria won the Hollywood lottery.

Three hundred years of preserved Spanish colonial history in San Antonio.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.