<prompt> Translate the following text to EnglishKatikati ya Elche, kuna mnara wa Calahorra, ambao wakati mmoja ulikuwa sehemu ya lango kuu la ukuta wa Elche.  <response>: Not far from the Municipal Park, the Calahorra Tower, Guardian of Elche, once formed part of the main gate in the long-vanished wall that surrounded Elche in Moorish times. 