This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

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

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

This impressive Boston holy house is the American mecca for Christian scientists.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

This giant rock arrived at this quiet park thousands of years ago on the back of a massive glacier.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

Townhouse facade doubles as an RMS Titanic Memorial.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Tucked in the back of this amazing antique store is an important piece of medical history.

The inventor of the Coney Island hot dog rests in a grand mausoleum in Brooklyn.

You must take the A train... to the last active cemetery in Manhattan.

Final resting place of Typhoid Mary.

Final resting place of the immigrant who brought artificial seltzer water to America.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

This recipe is set in stone.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

A heartbreaking monument showing the last morning in the life of Jane Griffith.