The Campo, the Duomo and the towers: the medieval masterpieces that made Siena famous.
Siena's treasures sit within a few minutes of the Campo. Climb early, visit the Duomo before noon, and keep the evenings free to watch the square fill with life.
The shell-shaped square at Siena's heart, sloping like a fan and ringed by Gothic facades - one of Europe's finest public spaces and the stage for the Palio. City portal.
Tip: Sit on the bricks like the locals do - no better people-watching in Tuscany.
Official site →A black-and-white marble masterpiece, with inlaid floor scenes, stained glass and the Pinturicchio-frescoed Piccolomini Library. Official site.
Tip: The combined ticket covers the cathedral, library, museum and more - good value.
Official site →The cathedral museum, home to Duccio's monumental Maestà and the original sculptures from the facade, with a panoramic terrace. Official site.
Tip: The terrace - the 'Facciatone' - offers one of the best views over the rooftops.
Official site →The 88-metre tower of the Palazzo Pubblico; the climb of more than 400 steps rewards with the finest panorama over the Campo and the countryside. City portal.
Tip: Go on a clear morning, before the heat and the queue.
Official site →The Gothic town hall, holding Simone Martini's Maestà and the Lorenzetti brothers' famous frescoes of good and bad government. City portal.
Tip: The frescoes are the finest secular paintings of their age - give them time.
Official site →The stark 13th-century church on its own hill, holding the relics of St Catherine of Siena and the chapel where she prayed.
Tip: From the terrace in front, the view over the Duomo is unforgettable.