A boy looks out from a tram in Istanbul
On the road near the Romanian capital of Bucharest
Victory Park in St Petersburg
Victory Park, St Petersburg
Bathers in Victory Park in St Petersburg braved temperatures of minus 15 Celsius
Workers transport hay during cold snap with temperatures around minus 17 degrees celsius at a zoo in south Russian city of Stavropol
The cold spell, which has seen temperatures fall to minus 20 Celsius in parts of Bulgaria, also affected Turkey's largest city of Istanbul. Although snow is not unknown in Istanbul, this time the city received not just flurries but a blanket of snow.