One of the most amazing sights to see if you're near Alghero, the large coastal town to the north of Sardinia, is the Grotta di Nettuno, an incredible cave network of stalactites which are tens of thousands of years old. Standing only one metre above sea level, the caves can be reached by a winding staircase of steps cut into the rock, leading you down 100 metres from the cliffs above. It costs 10 euros, but you won't regret paying for this experience once you're inside - the clever lighting and majesty of the stalactites creates an eerie subterranean environment that makes you feel like you've travelled back to the beginning of time. Guided tours run every half hour, and although these are nearly always full, the enormity of the caves and the long and winding trail through them means that you never feel too crowded by other tourists. Well worth a visit, particularly if you have kids.
www.grottedinettuno.it/
Google map: bit.ly/MYOPRW