An obelisk commemorating Lincoln's role in connecting the coasts.

Commemorating the spot where the famous scientist fed his pigeons.

A school used as a model for public education across the country.

Millions of numbers carved in glass represent the tattoos forced upon victims.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

What remains of the summer palace of King Kamehameha III.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

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

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

An Aladdin's cave of old Silicon Valley tech.

Once the largest winery in the world, this castle-like building now sits abandoned on the San Pablo/San Francisco Bay shore.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

The best Tiki bar in Las Vegas.

This former lieutenant governor's home is brimming with curiosities.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.