Carmarthen: Castle 
Description
A large part of the medieval castle has been replaced at some point by the county offices, but one of the gate towers, part of the outer wall and a fragment of one of the towers is still standing, and offers commanding views over the surrounding countryside.
Charge
Free
Getting There
From Swansea there are regular buses to Carmarthen, alternatively there are trains which are quicker, but less frequent.Latitude: 51.855718; Longitude: -4.305916
What3Words: ankle.fails.moss
