Hill-like structures formed by glaciers and sandy spits of land.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

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

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

Ice cream stand, snack bar, and time capsule of milk conveyance.

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

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

A men’s restroom became a sandwich shop.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This black shoreline is made up of exploded lava particles.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This legendary urban waterfall creates a dazzling display of rainbows.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A man-made island in scenic San Francisco Bay.

A living time capsule of the 1960s Richardson Bay water-front.

Concrete strongholds stand guard over the Golden Gate.

More than 700 species live within this murky marvel of a swamp on California's coast.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

From the Difference Engine to the Cray-1, all under one roof.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.