Arth Strength in South Cardiff | Facilities, hours & reviews Arth Strength is a gym in South Cardiff, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: 87 Glebe St, Penarth CF64 1EFOfficial website Things to do today Things to do tomorrow This weekend Free events Family events Kids activities in Cardiff Live music in Cardiff Live sports in Cardiff Cinemas in Cardiff Gyms in Cardiff All Cardiff events