The Basilica di San Domenico, also known as Basilica Cateriniana, is a prominent Gothic church in Siena, Italy, dedicated to St. Dominic. Built in the 13th century, it holds a special place in the hearts of the faithful, particularly because it houses several relics of St. Catherine of Siena, a Doctor of the Church. The basilica’s impressive facade, made of red brick, stands tall with its bell tower, which was reduced in height after a lightning strike. Inside, its vast nave devoid of aisles creates a spacious ambience accentuated by the minimalistic interior design typical of Dominican churches. It highlights a wooden Crucifix by Niccolò di Segna, an impressive fresco of St. Catherine receiving the stigmata, and her well-preserved head and thumb as holy relics. The basilica’s large windows ensure the interior is bathed in light, showcasing its sacred art. Although heavily restored in the 16th century following a fire, the basilica retains its historical gravity, attracting pilgrims and art aficionados alike to partake in its spiritual and cultural heritage.