Half way! Knighton`s Welsh name, Tref-y-Clawd, is Town on the Dyke, indicating that Offa`s Dyke actually passes through the town. Suitably enough, the Offa`s Dyke Centre opened here in 1999. It has a variety of facilities, all designed to involve children in Anglo Saxon culture. The clock in the main street was created in 1872. The Powys Observatory, open for tours at 2pm on Sundays, houses active telescopes, a planetarium and a section on seismology.