Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The unbelievably opulent home built for an infamous newspaperman.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

A shining, cold, black organ lies in San Francisco's financial district.

Art in the form of a winding, man made crack in stone.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

Olfactory delights in San Francisco's Botanical Gardens.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

130 replicas of world wonders squeezed into just 118 acres of space.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

A bypass decorated with large wooden troll carvings.