Located 155 kilometers north of Bangkok, Lopburi is unlike many historical cities. Modern day Lopburi has grown up and, for the most part, enveloped the remains of the old city, which had been a settled by various groups over the centuries. In recent years, Lopburi was discovered by tourists who were interested in history and culture, and the city now offers a refreshing insight into Thailand's history.
(http://www.tourismthailand.org/where-to-go/cities-guide/destination/lopburi/)