ðə kˈɜːɹənt bˈɪldɪŋ dˈeɪts tə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd θˈɜːɾi sˈɛvən ænd wʌz dɪzˈaɪnd baɪ ðɪ ˈaɪɹɪʃ ˈɑːɹkɪtˌɛkt wˈɪljəm vɪtɹˈuːvɪəs mˈɔːɹɪsən fɔːɹ dʒˈɑːn ˈɛdwɚd vˈiːnəbəlz vˈɜːnən, ðə ðˈɛn ˈoʊnɚ, wˌɛn ðə pɹˈiːviəs bˈɪldɪŋ wʌz fˈaʊnd təbi ʌnsˈeɪf.
The current building dates to 1837 and was designed by the Irish architect William Vitruvius Morrison for John Edward Venables Vernon, the then owner, when the previous building was found to be unsafe.