Although Siena is only the 12th largest city in Tuscany, with a population of just over 50,000, it is one of the most famous and visited. Its historic centre is a UNESCO World Heritage Site, containing buildings dating as far back as the 13th and 14th centuries. Having already shared my tips about places to eat, today I am sharing my top 5 tips for 3-4 days in Siena. 1. Museums & Churches Ticketed One of the main sights in Siena is the Metropolitan Cathedral of Saint Mary of the Assumption, simply known as Duomo. The entry ticket costs 8 euros and it also gives you access to the Libreria…