Walt Disney opened the theme park in Anaheim, California, on July 17, 1955. His first attempt saw thousands of visitors on opening day, which was both historic and problematic, as Disneyland was not yet prepared to host so many tourists.

Still, the park’s charm was tangible from day one, and vintage photos prove it. Today, Disney destinations can be found all around the world, from Orlando to Paris.

In honor of Disneyland’s 70th anniversary this summer, here’s a look inside Disneyland on opening day.