Of particular interest to archaeologists is the discovery of an ancient housing complex dating back to the seventh century AD.

BBC: NEWS | Europe | Acropolis building site stirs up storm

Ranging from rugged uplands, lakes and forests through to gently rolling drumlins, the landscapes of the Global Geopark represent a complex Earth history dating back as far as 650 million years.

UNESCO: Global Geoparks

The question is important, as much for dating the picture as for gaining a better idea of Titian's complex domestic arrangements.

ECONOMIST: Portrait of a lady and her daughter