Arezzo — the Piero della Francesca frescoes that art historians fly across oceans to see

In the Basilica di San Francesco, behind a glass barrier, Piero della Francesca's Legend of the True Cross (1452-1466) covers the entire apse in a fresco cycle that art historians rank alongside the Sistine Chapel and Giotto's Assisi. The mathematical perfection of the composition — every figure placed with geometric precision, the light falling at angles that shouldn't be possible in fresco — makes this the most intellectually sophisticated painting of the Italian Renaissance. €8, 30-minute timed slots, book at pifrancescarezzo.it. Beyond Piero: Arezzo's Piazza Grande (the tilted square where La Vita è Bella was filmed) hosts the Fiera Antiquaria on the first Sunday of every month — the largest antiques fair in Italy, 500+ stalls of furniture, ceramics, jewelry, prints, and objects spanning 5 centuries. Florence: 1h train. Siena: 1h drive. Perugia: 1h drive.