If thrilling roller coasters, mind-blowing 3-D animation experiences, and the Wizarding World of Harry Potter sound like your trifecta of fun, then Universal’s Islands of Adventure is really the only park you need to visit during your Orlando vacation. The most adult-oriented of Orlando’s theme parks, IOA, as it’s known, is home to one of America’s most exciting roller coasters, the Incredible Hulk, as well as incredible 3-D rides like the Amazing Adventures of Spider-Man, Skull Island: Reign of Kong, and much, much more. The Hogsmeade portion of the Wizarding World of Harry Potter is IOA’s major new attraction and includes the extraordinary 3-D ride Harry Potter and the Forbidden Journey. If you want to see Diagon Alley and the rest of the Harry Potter attractions, be sure you buy the ticket that also grants access to the Hogwarts Express and Universal Orlando Resort.