Ipun katahan magenah nampek saking genah pertahanan sekadi tembok Romawi, yadiastun ring punapiné puniki ngawinang genah sané sampun kawangun kaenyagang rikala sané nuwénang jagi ngwangun.
They were usually located near any existing town defences, such as Roman walls, although this sometimes resulted in the demolition of structures occupying the desired site.