Bhutan has a rich and unique cultural heritage that has largely remained intact because of its isolation from the rest of the world until the mid-20th century. One of the main attractions for tourists is the country's culture and traditions. Bhutanese tradition is deeply steeped in its Buddhist heritage. Hinduism is the second most dominant religion in Bhutan, being most prevalent in the southern regions. The government is increasingly making efforts to preserve and sustain the current culture and traditions of the country. Because of its largely unspoiled natural environment and cultural heritage, Bhutan has been referred to as "The Last Shangri-La".