Cuevas del Drach are caves located next to city of Porto Cristo in Mallorca, Spain. It contains one of the largest underground lakes in the world. Once you reach the underground lake (Lake Martel), you can see musicians on the boat playing classical music.
A small-pebbled beach found on the south coast of Menorca that offers excellent snorkeling and diving. Although Cala Coves is more of a tourist attraction due to the steep rocky cliffs that contain more than 100 burial caves cut into the limestone. The caves date back to Pretalayótic period and some of which can be explored on foot. There are no facilities here so come with plenty of water and a picnic. The Romans used this as the first harbour in Menorca. Map of Cala Coves