A trip through the Cuevas del Drach (Dragon Caves) is a definite must when you're on holiday in Cala Millor. They're in Porto Cristo, which is only about 20 minutes out of town so don't miss your chance to see this incredible natural attraction. There are ancient stalactites hanging from the ceilings and a huge underground lake that's thought to be one of the largest in the world. Your tour will usually include classical music played live on the lake as part of a magical sound and light show and you can take a boat trip to see the caves from a different angle too. The Dragon Caves aren't the only thing you can do in Porto Cristo. This was one of the most popular beach resorts in Majorca before Cala Millor sprung up, so it's a great place to spend a few hours. While you're there, why not go for a stroll along the cliff tops and the quiet beach, and visit the harbour.