Sometime after the Holy Kingdom of Faerghus gained independence in Imperial Year 751, the Empire constructed the Fortress City of Arianrhod within House Rowe's domain. Upon the city's completion, House Rowe promptly revolted against the Empire and joined the Kingdom, gifting it a valuable bulwark against incursions from the south.
"Just a minute! The following section contains spoilers, viewing it will cost a lot. Are you prepared to pay for it?"
In Imperial Year 1185, Arianrhod became a key objective in the conflict between Fódlan's three countries.