The Kastro (castle) is situated in the centre of Parikia, in the old quarter. Only one wall remains today. There are many beautiful churches in that area.

The Butterfly Valley(Petaloudes). The valley took that name from the many butterflies but flying only at night. The valley is beautiful and offers a great panorama over the island of Antiparos.

The Ancient Marble Quarries. There are situated in Marathi and it is the place where the famous white semi transparent marble was produced in antiquity. This marble was used in many masterpieces like the Venus de Milo, the Hermes of Praxiteles.
 
 

Walking
Paros has numerous old stone-paved roads connecting the interior towns, many of which are still in good condition and perfect for walking. One of the best known trails is the Byzantine Road between Lefkes and Prodromos, a narrow path paved along much of its 4km (2 1/2-mile) length with marble slabs. Begin in Lefkes, since from here the way is mostly downhill. There isn't an easy way to find the beginning of the Byzantine Road among the labyrinthine streets of Lefkes; we suggest starting at the church square, from which point you can see the flagstone-paved road in a valley at the edge of the town, to the west. Having fixed your bearings, plunge into the maze of streets and spiral your way down and to the right. After a 2-minute descent, you emerge into a ravine, with open fields beyond, and a sign indicates the beginning of the Byzantine Road. It's easy going through terraced fields, a leisurely hour's walk to the Marpissa Road, from which point you can catch the bus back to Parikia (check the schedule and exact pick-up point beforehand). This also makes a challenging mountain-bike outing.

Also Visit: www.Exploreparos.com