Roman towns were planned according to a grid pattern with two main roads, the cardo and decumanus, intersecting at the town center. Public buildings like the forum, basilica, temples, and baths were located in the central area. The forum served as a meeting place while the basilica was used for business and legal matters. Colonies established by Rome helped extend its culture and control. They were often given defensive walls and followed a standardized grid street and land plot pattern.