The original El Capitan, which is now a grandiose movie theater, is next door to the Hollywood Masonic Temple, which has been renamed the El Capitan Entertainment Center.
No, the original El Capitan is at 1735 N. Vine St., across Vine St. from Capitol Records, and is today the Avalon nightclub.
https://avalonhollywood.com/The new El Capitan, where Jimmy Kimmel is taped, is at 6838 Hollywood Blvd.
1735 Vine had been renamed as The Hollywood Palace by ABC in the '60s so the "El Capitan" name was no longer in use. 6838 Hollywood Blvd. was acquired by Disney and others and was restored and renamed "El Capitan" circa 1989. As Disney owns both the El Capitan Theater and ABC, they figured it would be a logical venue for Jimmy Kimmel.