Colomendy Penmon Adeiladwyd y colomoendy hwn tua 1600 OC. Rhoddwyd nifer o gerrig y tu fewn i'r adeilad i gynnal ysgol a ddefnyddid i fynd at y nythod. Mae Llawlyfr Henebion Mon ar werth yng Nghastell Biwmares a Chastell Caernarfon. Mae'r heneb hon yng ngofal ysgrifennydd gwladol Cymru. Mae'n drosedd ei difwyno neu wneud niwed iddi. Penmon Dovecot This dovecot was built about 1600. The stone pillar inside the building was provided to support a ladder giving access to the nests. A guidebook to the Ancient Monuments of Anglesey is on sale at Beaumaris and Caernarfon Castles. This monument is in the care of the Secretary of State for Wales. It is an offence to injure or deface it.

English translation: Penmon Dovecot This dovecot was built about 1600. The stone pillar inside the building was provided to support a ladder giving access to the nests. A guidebook to the Ancient Monuments of Anglesey is on sale at Beaumaris and Caernarfon Castles. This monument is in the care of the Secretary of State for Wales. It is an offence to injure or deface it.

Penmon Point Toll Road, Penmon, United Kingdom where it built (1600)