Tinos Xombourgo: Located just 3 km from Steni village and just above Xynara village, Xombourgo is a huge granite mountain, about 640 m high. On top of Xombourgo there is is a huge cross, which is lit at night and can be seen from quite a distance. Excavations that have been performed in the area make scientists believe that the ancient capital of the island was built there in classical times.
In the medieval times, the Venetians built a Castle on top of this mountain, which they named St Helena's Castle, after the church that used to be in its premises. This Castle used to be very powerful at that time and protected the island from enemies and pirates. Xombourgo mountain today offers impressive views to the visitors and many picturesque villages have been built against its slopes.