Simplify the following text for a Grade 4 native English-speaking person.
Original: The Gallery is situated in the High Street , in a 17th century Grade I Listed Town House and is run by Guildford Borough Council . Its own art collection includes works of Guildford and the surrounding area , and work by Guildford Artists , most notably John Russell R.A. Also run by the borough Council is Guildford Museum .
Simplified: It is also the seat for the borough of Guildford .