A huge musical instrument played by the ocean.

Only hotel where you can legally launder money.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

A crumbling Beaux Arts monument to the Bay Area's age of rail.

Dive bar built out of the remains of a whaling ship.

Playable, historic pinball machines fill this Alameda museum.

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.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

Washington's iconic carousel has a nice piece of Civil Rights history.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

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.

Home to items never before seen by the public.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

The site of Paul Revere's historic two lantern warning.

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

This landmark cemetery in Boston was created more than 300 years ago.