Larger than New York’s Central Park and Chicago’s Millennium Park combined, San Diego’s Balboa Park comprises 1,200 acres of urban green space with 16 museums, 65 miles of trails, and of course, the internationally renowned San Diego Zoo. Dating back to the early 19th century, Balboa is one of the oldest public parks in the nation. Luckily for visitors, much of the early architecture has been impeccably preserved, including the iconic California Tower. The ornate structure, which was…