This site has a fantastic museum, starting with a great auditorium film about the site and how it worked in the 11th century. Very interesting (and with English subtitles). The museum has a good exhibition, and a view over the excavated site. This was once city of 12000 people, built in just 10 years in the C11th. And was sacked after just 85 years, not discovered again unlit the early C20th. After visiting the museum there is a bus to take you to the site itself. A really great visit.