Winterthur is a city in the canton of Zurich in northern Switzerland. With over 120,000 residents, it is the country's sixth-largest city by population, as well as its ninth-largest agglomeration with about 140,000 inhabitants. From Wikipedia
Advanced imaging technology reveals a previously unknown painting beneath Picasso’s 1901 portrait of sculptor Mateu Fernández de Soto, sparking new questions about his creative process.
