San Ysidro

San Ysidro
San Ysidro has come to be known as "The Gateway to the Americas" because of its location at the southern most portion of California. Together with Tijuana, Mexico, it is considered the busiest border crossing city in the world. The construction of Interstate 5 and Highway 805 during the 1970s and 80s gave San Ysidro the title of biggest port of entry worldwide.