Yuma Territorial Prison Yuma Territorial Prison is living proof that there really was a wild West. More than 3,000 culprits, convicted of crimes ranging from polygamy to murder, lived in rock and adobe cells during the prison's 33 year life. Still standing are the cells, main gate, and guard tower that give visitors a glimpse of convict life a century ago. Choose another thumbnail from the list on the left, or return to the front page.