Disneyland's Opening Day Attractions on July 17, 1955

Adventureland

• Jungle Cruise
• Swiss Family Treehouse

Frontierland

• Golden Horseshoe Revue
• Mark Twain Riverboat
• Davy Crockett's Explorer Canoes

Fantasyland

• King Arthur Carrousel
• Peter Pan's Flight
• Snow White's Scary Adventures
• Mad Tea Party
• Mr. Toad's Wild Ride
• Pinocchio's Daring Journey
• Dumbo the Flying Elephant
• Alice in Wonderland (walkthrough)

Main Street, U.S.A.

• Main Street Cinema
• Penny Arcade
• Emporium (shop)
• City Hall (guest services)
• Horse-Drawn Streetcars

Tomorrowland

• Submarine Voyage
• Autopia
• Rocket Jets (later Astro Jets)
• Monorail (opened 1959, but track existed)
• Monsanto Hall of Chemistry

Many original attractions have been updated, replaced, or removed, but several (Jungle Cruise, Mark Twain, Carrousel, Peter Pan, Snow White, Mad Tea Party, Dumbo, Autopia) still operate in evolved forms, preserving Walt Disney's opening-day legacy.