Heritage Tourism in Wales

When I travel, I do enjoy seeing archaeological sites when ever possible.  On my current trip I am seeing neolithic sites (5-6 thousand BP) like St Lythans Burial Chamber:

and more recent (1100 AD) like Ogmore Castle:

The Welsh Government has a great site to find these places (and an app too)!

Oh yeah, one last picture of the popular and LARGE Caerphilly Castle.  Spectacular!