Visitors from home

Next week we have visitors. Friends from New Zealand are dropping by our place as part of a mixed holiday/business trip to Europe. Isabel and Charlie live in Melbourne but have spent the last couple of weeks travelling from Paris south and we are expecting them to arrive on the 8th. Isabel has a conference to attend in Parma (home of the famous ham) on October 12 so we will have a couple of days to show them the best of Tuscany.

Tuscany in three and a half days. Where do we start?