The Château de Trécesson at Campenéac, Britanny dates from 843 AD and the current building from 1440. The oldest part of the current building is the two towers and arched entrance way which you see here.
The towers flanking the gate house have a magical fairy tale feel to them. Love the way the wall leads the eye into the image and the beautiful arch. It's fascinating to see that little row of windows under the roof. It looks like they've glazed the archery slits too. Fabulous fav
@janiskay The effect that you see is structure enhancement, essentially increasing the relative contrast of the mid-range tonal values. This was editited firstly in Lightroom 5.6 then in Colour Efex-4 Pro and then again in Lightroom.