Kariz-e-Kish (the underground city) is one of the tourist destination. Its surface is around 10000 square meters and it was built about 2500 years before and it was used to collect purified water for inhabitants of the islands in each corner of this underground, you will find a voice guide can explain about that place and it is like a museum. Its ceiling has 8 meters length and it is full of shells and corals so that you cannot see like this underground city anywhere.