A Polish explorer who spent years hunting for a Nazi gold train has finally struck gold following the discovery of 24 priceless renaissance wall portraits dating back 500 years.
Piotr Koper made his sensational discovery after finding the portraits hidden behind the plastered walls of a palace he was renovating in the village of Struga near Wrocław.
The construction entrepreneur and lover of local mysteries was carefully lowering the remains of a dome that once covered the palace ballroom when he noticed fragments of paintings under old plasterwork.