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

Perhaps the most scandalous statue of America's first president.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Home to items never before seen by the public.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

Here be dragons.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

A unique set of caves that spits waves back out into the ocean.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A daily replay of the experiment that proved the rotation of the Earth.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This statue intended for children to enjoy became a minor political spat.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

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

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

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