Historical records indicate that a semi-circular structure or barbican was built by Edward I in 1277; this area was later named the Lion Tower, to the immediate west of the Middle Tower. Records from 1335 indicate the purchase of a lock and key for the lions and leopards, also suggesting they were located near the western entrance of the Tower. By the 1500s that area was called the Menagerie. Between 1604 and 1606 the Menagerie was extensively refurbished and an exercise yard was created in the moat area beside the Lion Tower. An overhead platform was added for viewing of the lions by the royals, during lion baiting, for example in the time of James I. Reports from 1657 include mention of six lions, increasing to 11 by 1708, in addition to other types of cats, eagles, owls and a jackal.
