This sign, designed by neon artist Betty Willis and erected in 1959, has become a world-famous symbol of Las Vegas. It was added to the National Register of Historic Places in 2009.
The longest (and most expensive) bridge in the world when it opened in 1936, the Bay Bridge was first proposed by self-proclaimed "Emperor Norton I" in 1869.
These tar pits hold the fossils of Ice Age animals that became trapped in the asphalt deposits here. The fossils were first described by Wellesley College professor William Denton in 1875.
