Lluniau: Cestyll Cymru // Photos: Castles of Wales

Yr wythnos hon, cyhoeddwyd rhestr y Lonely Planet o'r 500 lle gorau yn y byd i ymweld â nhw, gyda Chastell Caernarfon yn eu plith. Ond nid dyma'r unig gastell yng Nghymru sy'n werth ymweliad yr haf hwn:

This week the Lonely Planet revealed its 500 all-time best places to visit in the world, with the majestic Caernarfon Castle making it onto the list. But it's not the only notable castle in Wales that's worth visiting this summer:

Mae Castell Caernarfon, a grewyd gan Edward I, wedi ennill statws Treftadaeth y Byd. // Created by Edward I, Caernarfon Castle has been awarded World Heritage status. It was here in 1969 that the investiture of the Prince of Wales took place.

Wedi newid dwylo rhwng tywysogion y Deheubarth dros y blynyddoedd, aeth Castell Dinefwr i feddiant brenhiniaeth Lloegr yn 1287. // Dinefwr Castle is thought to have been rebuilt by Rhys ap Gruffydd, ruler of the kingdom of Deheubarth in south Wales from 1155 to 1197.

Castell Biwmaris oedd yr un olaf i Edward I ei godi yng ngogledd Cymru. // Beaumaris Castle, the last one built by Edward I in north Wales, is considered to be technically perfect with its symmetrical 'walls within walls' design.

Castell Powis ger Y Trallwng yw un o'r ychydig leoedd ym Mhrydain lle gall gardd Baróc gael ei gwerthfawrogi'n llawn. // Powis Castle near Welshpool is a medieval castle and grand country mansion with spectacular Baroque gardens.

Fe newidiodd Edward I gwrs naturiol yr afon Clwyd wrth godi Castell Rhuddlan. // Edward I needed access to the sea to keep his castle in Rhuddlan supplied, so he diverted the river Clwyd for over 2 miles!

Castell y Fflint a adeiladwyd yn 1277 oedd un o'r cestyll cyntaf a godwyd gan Edward I. // Flint Castle, built in 1277, is notable for the isolated tower that protected the inner gatehouse and outer bailey.

Un arall o gestyll Brenin Edward I, fe godwyd Castell Aberystwyth fel rhan o'i ymgyrch yn erbyn y Cymry yn 1277. // Aberystwyth castle, built in 1277, is another of Edward I's fortresses. It has spectacular views over Cardigan Bay.

Cafodd Castell y Waun ger Wrecsam ei adeiladu gan Roger Mortimer de Chirk yn 1295 er mwyn gwarchod Dyffryn Ceiriog. // Chirk Castle near Wrexham was built by Roger Mortimer de Chirk in 1295 to guard the Ceiriog Valley.

Mae'n debyg y codwyd Castell Dolbadarn gan Llywelyn Fawr ar ddechrau'r 13G. // It's thought that Dolbadarn Castle was built by Llywelyn the Great in the early thirteenth century.