The kingdom of Bahrain is a very attractive place to live in, and it is so for thousands of years. There is evidence of human presence for more than 4200 years here and many reminders of this. One of them is Qal'at al-Bahrain, the fort of Bahrain. It is opened for visitors since 2008 after listed on the UNESCO World Heritage Sites list one year earlier. Qal'at al-Bahrain was an ancient harbor and capital of Dilmun, a significant ancient civilization of this area. The shape we see today is the heritage of Portuguese ruling time. The site includes a fortress, museum, and archeological site.