Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

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

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

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

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

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.

A bit of retro transportation flair preserved in the world's largest department store.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

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

Elevated freight railway turned wildly successful urban park.

A small but industrious mining operation that allows visitors to touch precious gems while they are still in the rock.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

A bright little alley in La Boca is a part of tango history.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Perched atop the highest hill in Cartagena, this 17th-century convent offers spectacular views of the city.

The colonial city's social history is reflected in its fanciful door knockers.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

Cathedral carved out of salt, located a mile below the earth's surface.