The first truly "theme" park was probably Disneyland, in 1955. It was an unusual enough concept that Disney had a somewhat difficult time getting financing for it. Permanent amusement parks had existed for longer... Coney Island, for example, had been around since the 19th century... but they really didn't have a unifying "theme."
Six Flags Great America in Gurnee was the first theme park in Illinois. It opened in 1976.
Disneyland was the first Disney theme park to open. It opened in 1955 in Anaheim, California.
Disneyland opened first in 1955, while Disney World opened later in 1971.
Mr. Disney himself opened the Walt Disney theme park in 1955.
Opened 1960 (Opened 1980 as a Theme park).
The first Disneyland park was built in Anaheim, California, United States and opened on July 17, 1955.
Yes, there is one Disney theme park in Japan that was built in Tokyo. It opened on April 15, 1983. It was the first park that was built outside of the grounds of the United States.
The first Disney world theme park was in Florida, it was opened in October 1 1971.
It opened in 1955.
The world's oldest theme park still in operation is Bakken in Klampenborg, Denmark. Also known as The Hill, it first opened in 1583.
Opened LaterIt was not opened in 1969. It opened with Magic Kingdom theme park on October 1, 1971.
Saying "the first Disney World" implies there is another one, but there is only one Walt Disney World theme park/resort. It opened in Orlando Florida [technically Lake Buena Vista] in October 1971.