World's Most-Visited Theme Parks
Greg Balfour Evans / Alamy
No. 2 Disneyland Park, Anaheim, CA
Annual Visitors: 16,140,000
Disney's original theme park, opened in 1955, comes in a close second to its significantly larger counterpart in Orlando. Disneyland can boast about some of Walt's best original rides as well as the newly revamped Disney California Adventure next door—all the more reason to book an Anaheim vacation.