Alcatraz Island

Alcatraz Island is located in the San Francisco Bay, 1.5 miles (2.4 km) offshore from San Francisco, California, United States. It's infamous for an old penitentiary which is no longer in use.

Scooby-Doo and Scrappy-Doo (first series)
[http://scoobydoo.wikia.com/wiki/Mystery_Inc. The gang] took a group tour there and encountered the Lady Vampire of the Bay.

The Richie Rich/Scooby-Doo Show
Shaggy Rogers, Scooby-Doo, and Scrappy-Doo tried to keep an enemy spy from stealing an important secret package there.

Season two
[http://scoobydoo.wikia.com/wiki/Mystery_Inc. The gang] took a tour with Julian Libris as part of their investigation into the San Franpsycho. They were attacked by the monster; it also sailed away in the tour boat, leaving them stranded. This left them highly suspicious of Julian.

Appearances

 * Scooby-Doo and Scrappy-Doo (first series)
 * 110. I Left My Neck in San Francisco
 * The Richie Rich/Scooby-Doo Show
 * 112c. Surprised Spies
 * What's New, Scooby-Doo?
 * 208. The San Franpsycho