Join 科学与技术 upcoming events being held in Semestene. Semestene is a small, tranquil Italian town nestled in the province of Sassari, on the picturesque island of Sardinia, known for its well-preserved Nuragic ruins, including the sacred well of Santa Cristina, and the stunning surrounding landscapes of undulating hills and vast plains, inviting visitors to explore the rich cultural heritage and natural beauty of this lesser-known Mediterranean gem.