Universal Studios Hollywood
What can't be duplicated at the Orlando branch is the Universal backlot, where movies have been made since 1915. Hop aboard the new electric trams which wind around working soundstages and exterior sets where many popular movies and TV series have been filmed. As they are still being used today, going during the week increases your chances of seeing stars at work. During the studio tour, you'll visit The Good Place, see the airplane wreckage from War of the Worlds, and have a close call with Norman Bates from Psycho as well as drive through 4D motion simulated "rides."
The park gets a scary makeover in October for Halloween Horror Nights when new mazes full of monsters, murderers, and jump scares pop up. If you can swing it, splurge on the express tickets to drastically reduce wait times.
The tram ride is the best place to begin your visit both for historical context and because the line becomes longer as the day goes on.
Also run by Universal Studios, CityWalk is an adjacent corridor of shops (there's a great place to snag Dodgers gear!), restaurants like Margaritaville, Bubba Gump Shrimp Company, and the Hello Kitty & Friends Cafe, and movie theaters. There's also several quick food options like Pink's Hot Dogs and Voodoo Doughnut. Lots of park visitors end their day here, so make dinner reservations.