In northern Russia, the much-loved banya - the traditional steam bath - has survived kingdoms, communism, the Nazi invasion, famines and feasts. It has been part of family and community life for more than 1000 years.
The banya was first chronicled in 1113 when the Apostle St Andrew visited Novgorod and noted "wooden bathhouses, warm to the extreme, where people undress, anoint their bodies in oil, lash themselves with reeds, then dowse their bodies with icy water".
I arrive in Novgorod in spring, after dark, and tramp over snow to the banya in the hotel's garden. The changes to banya etiquette, since St Andrew's time, are that we're not entirely naked and we systematically beat each other up and down limbs and across the back with a twiggy bunch of birch leaves instead of reeds. I can't cope with a dowse of icy water but my friend says it's awesome.
Novgorod, when St Andrew visited, was the biggest city in Russia, the centre of a vast medieval city-state that controlled most of Europe's northeast. After the 1500s it was tossed between the Moscow and Swedish kingdoms and, later, out-glamourised by St Petersburg, 180km away. Its greatest indignity was four years of Nazi occupation when all but 40 of the 2500 stone buildings were destroyed.