When Bayern Munich and Inter Milan battle it out in this weekend's Champions League final, not only will they be fighting for Europe's top prize, but will also be aiming to complete an historic treble.
Both Bayern and Inter have won their league and domestic cup, and clinching the Champions League would mean adding their names to an exclusive group of treble winners. Whoever wins, it will be a first for the country they hail from.
Five teams have completed the 'perfect' treble - winning the league, main domestic cup and the most prestigious European cup all in one season. We also take a look at the other European sides to lift three trophies (including a European cup) in a season, but made up of a different combination of trophies.