Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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.

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

The Boston square dedicated to the dark poet who was born nearby.

A monument celebrating the idea of reaching inaccessible places.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

This unusual building straddles two countries.

The 28-foot granite map plots the locations of 40 theaters in New York City.

New York City's only preserved family home from the 19th century.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

Commemorating the spot where the famous scientist fed his pigeons.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

A massive sustainable farm designed by the mastermind behind Central Park.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.