The medieval town of Poppi is a rare "walled city", overlooked by the Castle of the Guidi Counts, the work of the Di Cambio family of architects and a "prototype" for Palazzo Vecchio in Florence. Thanks to continuous restoration over the centuries, the castle has been excellently preserved. Dante was a guest of the Guidi counts for almost a year, in 1310, and while staying here, he wrote Canto XXXIII of the Inferno. The earliest mention of the castle in the chronicles dates back to 1191. The building underwent renovation beginning in 1274, at the behest of count Simone Guidi and his son Guido. At its feet, on the 11th of June 1289, the battle of Campaldino took place, in which even Dante took part. Inside the Castle, you can visit the Campaldino Battle Museum with a scale model depicting the formation of the Guelphs on one side and the Ghibellines on the other. In his Divine Comedy, Dante tells the story of Bonconte da Montefeltro, who died in battle.

Near the Castle, if you walk along the beautiful porticoes on Via Cavour, you will see the San Fedele Abbey, dating from the 11th century, a veritable treasure trove of works of art in Romanesque style.

The town is full of shops where you can purchase local products.