Viyyoor is Ward 4 of Thrissur Municipal Corporation. It is about 4 km from Swaraj Round. It houses one of the three central jails in Kerala, Viyyoor Central Jail.Institutions Viyyoor Central Jail Government Engineering College, Thrissur District Institute for Education and Training Hindi Training College Viyyur Grameena vayanasala St. Francis L.P. School 110 kV SubstationMajor Places of WorshipViyyoor Shiva temple, which stands on the entrance of Viyyoor near the Viyyoor bridgeRC Church of Our Lady of Perpetual Help (Nithya Sahaya MAtha Church) Viyyoor Manalarukavu devi temple, famous for the kavadi mahotsavam celebrated every year