island prisons

http://en.wikipedia.org/wiki/Cockatoo_Island_(New_South_Wales) ,
https://www.google.ca/search?q=Cockatoo+Island+(New+South+Wales)&es_sm=93&source=lnms&tbm=isch&sa=X&ei=332RVM2SLcvroATJuYHoBg&ved=0CAkQ_AUoAg&biw=1600&bih=799

http://en.wikipedia.org/wiki/Alcatraz_Island SF
https://www.google.ca/search?q=Alcatraz+SF&es_sm=93&source=lnms&tbm=isch&sa=X&ei=aXyRVMv1HYKxogTA44Io&ved=0CAkQ_AUoAg&biw=1600&bih=799

http://en.wikipedia.org/wiki/Rikers_Island NYC
https://www.google.ca/search?q=rikers+island&es_sm=93&tbm=isch&tbo=u&source=univ&sa=X&ei=EnyRVIKkEZfZoASRtYH4Cg&ved=0CDIQsAQ&biw=1600&bih=799

http://en.wikipedia.org/wiki/Robben_Island CT SA
http://www.dailymail.co.uk/travel/article-1207586/Nelson-Mandelas-Robben-Island-prison-arresting-insight-South-Africas-past.html ,
https://www.google.ca/search?q=robben+island+prison&sa=X&es_sm=93&biw=1600&bih=799&tbm=isch&tbo=u&source=univ&ei=b36RVKaHKoqzoQSZj4KoDA&ved=0CCsQsAQ

https://www.google.ca/search?q=island+prisons+in+the+world&es_sm=93&biw=1600&bih=799&source=lnms&tbm=isch&sa=X&ei=GX6RVPfZKJG1oQSSioLoDA&ved=0CAgQ_AUoAQ