A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The house where John Wilkes Booth conspired with his co-conspirators.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

The only surviving prototype for Buckminster Fuller's house of the future.

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.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

A quarter-scale locomotive wonderland built by one man and his family.

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

This quaint stretch of road is the final resting place for hundreds of America's four-legged veterans.

The birthplace of the Ford Model T is now a museum full of antique cars.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

A place for ship-lovers to watch the passage of freighters traversing the Great Lakes while learning about their history.

This missionary's legacy looms large over the Upper Peninsula of Michigan—literally.

Advice-columnist's bell tower, paid for with pennies.

"The Most Boring Road in the State."