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.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

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

Over 50 whirling pools left behind from the glacial age.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An office built to look like a giant basket.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

The park is home to the United States's only still-operating Dutch windmill.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This freshwater spring fills with 10,000 gallons of water per minute.

This erect, phallic geological spire wasn't always named so domestically.

The oldest experimental corn field in America is still creating better ways to grow crops.

This house renovated by Frank Lloyd Wright was the centerpiece of a lavish 20th-century estate.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

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

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.