The Avocado Capital of the World
In fact, the annual Avocado Festival is this Sunday if anybody wants to come get stuffed on carney food and eat some Holy Guacamole

Olives were the original main crop here until around the 1920s or 1930s. Frank Capra and a few other Hollywood biggies used to own olive ranches. In the 60s and 70s avocado ranches became a popular tax write-off for doctors and dentists.
The "back" gate to Marine Corps Camp Pendelton is in the middle of town.
There used to be a railroad through Fallbrook (late 19th and early 20th centuries), a main north-south line connecting all the way south to National City and then going north through Temecula, with a connection west to the coast. It fell into the Santa Margarita river a couple of times,

and when they built Camp Pandelton around the time of WWII it lost its east-west connection. The only thing left is a crossing sign south of town and a few pieces of track.
One of the first Congressional Medal of Honor recipients, William Pittenger, moved here after the Civil War and became a preacher. He participated in what became known as "The Andrews Raid" or "The Great Locomotive Chase".
Tom Metzger, founder of the Aryan Nation lived here for a time before moving to a big house in Escondido. When he went broke from a lawsuit he moved back, from what I hear, and ekes out a living fixing old cars.