Oasis Village was used to house political prisoners and the Training Institute was used to transform criminal offenders through physical work. These two places have been shut down but they still attract visitors to come to have a look at these mysterious places where special people were held.The Council for Cultural Affairs of Executive Yuan has already transformed these places that record the dark age of human rights in Taiwan as the "Green Island Cultural Zone" to preserve the history, culture, human right development, scenery and the cultural record of Green Island. This is one of the important landmarks in the human rights development history of Taiwan.