There are three major attractions (Knott's Berry Farm, Medieval Times,
and Pirate's Dinner Adventure) in Buena Park.
Knott's Soak City water park is open seasonally.
Also, BODIES ... The Exhibition and Titantic The Experience may currently be seen at the former MWM site.
The most inexpensive way to travel between the Disneyland Resort and Buena Park by is taking the Metro 460 bus.
A bus schedule as a PDF file may be obtained here.
Metro customer information may be reached at 1-323-GO-METRO (1-323-466-3876).
Buses headed from Disneyland display "Downtown LA" in their destination signs.
The fare between Anaheim and Buena Park is $1.50 - if you took line 460 to/from Downtown Los Angeles, the fare would be $2.90 .
Purple numbers identify stops for Metro's Nextrip service, which can give you the bus' estimated arrival time at the stop.
[There is an alternative bus route - Anaheim Resort Transportation line
18 - but it is not recommended,
since it costs more, runs less frequently, has been repored to be unreliable, and takes longer to travel between Disneyland and Buena Park.]