Bath city walls the Romans, to surround their town (known then as "Aquae Sulis"), probably in the 3rd century. The Anglo-Saxons by the 10th century had established Bath as a fortified "burh" (borough), utilising the existing town walls, and maintaining Bath as a centre of regional power. Bath, located on the northern edge of the kingdom of Wessex, would have guarded against any attack from neighbouring Mercia, which was held by the Danes for a time. The height of the walls was increased on the orders of King Stephen during The Anarchy. Bath's medieval walls included four gates. The North and South Gates
Aquae Iasae part of the Roman settlement was located on the highest terrace of the hill Varaždin spa, today the park and archaeological site. The residential part of "Aquae Iasae" was on the terraces that descend to the foot of the hill in the foothills of the craft-established commercial and trade show facilities. At the end of 3rd century AD Aquae Iasae were ravaged during the incursion of the Goths, then in the beginning of the 4th century the "thermae" were restored by Emperor Constantine. The resort was completely ruined and deserted in the 4th century during the invasions of the Migration