Wikipedia
Porth-y-Tŵr
Porth-y-Tŵr ( Welsh for Tower Gate) is a gatehouse and bell tower overlooking St Davids Cathedral in the small city of St Davids, Pembrokeshire, Wales, UK. It is the sole survivor of four medieval gates to the walled Cathedral Close. The 13th-century octagonal tower, adjoining the gateway, now contains the cathedral's bells.