The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The home of the first American-born saint is one of the only curved buildings in New York.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

Statue commemorating the use of ether in anesthesia.

One of the now-less-hidden floral gems of the "Emerald Necklace."

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

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

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

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.

This aluminum “stairway to heaven” has impaled at least a couple of birds.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.