Astley opened a riding school in 1768 London near Westminster Bridge (this is the bridge that you see adjacent to Big Ben and the Houses of Parliament). Here he held a school in the mornings, and performed trick riding in the afternoons. He set up a ring, grandiloquently calling it "the circus." The idea of the ring was not Astley's, but the name was. His original ring was 62 feet in diameter, which he later reduced to 42 feet, which is still the standard diameter today.