Inter Milan last won the UEFA Champions League in 2010, completing a historic treble under the management of José Mourinho. They defeated Bayern Munich 2-0 in the final held at the Santiago Bernabéu Stadium in Madrid. This victory marked their third Champions League title, adding to their previous wins in 1964 and 1965. The 2010 triumph remains a cherished moment in the club's history and a testament to their enduring legacy in European football.