The northern city of Ha Long in Quang Ninh Province will put into operation double-decker buses to serve tourists from next week. The Ha Long City tour will cover 50 kilometres through nine tourist sites such as Sun World Park, Ha Long Market, Ben Ca, Ha Long Park, Tuan Chau Park, Quang Ninh Museum, Royal Lotus Hotel and Vinpearl Ha Long. Ha Long Park is among destinations of the tour The Hop on-Hop Off tour is a convenient service, helping tourists travel and visit well-known destinations in the city. Two buses which can carry 63 passengers in total offer four kinds of tickets, consisting of VND179,000 (USD7.78) for a four-hour trip, VND219,000 for five hours, VND249,000 for 10 hours and 299,000 for 24 hours. There will be free services on the launch day of June 18.