Golden Gate Park's historic collection of plants.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Olfactory delights in San Francisco's Botanical Gardens.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

Location of the first public performance and singing of the "Battle Hymn of the Republic."

The Inuit kayak from Robert Peary's 1896 expedition to Greenland is now on display at a local library.

Cape Cod’s historic beacon made famous on a potato chip bag.

A small burial ground honoring Native American veterans of the Revolutionary War.

Ghostly specters are said to haunt this secluded cave where a famed Wampanoag leader spent the final days of his life.

The colonial home of Paul Revere during the American Revolution.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

This general store near Boston was once owned by Henry Ford, who had it relocated to a different town using a team of oxen.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

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

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

The phrase "the shot heard around the world" was coined after a skirmish at this bridge.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.