You are viewing a single comment's thread from:RE: 7 World’s Continents Photo Challenge - North American Friday week #79 - the absolute winner takes 200 SBD!View the full contextroadtrips (60)in #travel • 6 years ago Alcatraz, San Francisco Between the years 1934 and 1963 the island Alcatraz was a high security prison. Probably back then there wasn't that much traffic on the sea. Today Alcatraz is a famous tourist attraction and museum.