Parika is the main port and largest town on the island. It gets quite busy along the harbor as ferries and hydrofoils come and go, but move away from the docking area and it becomes less crazy.
The real attraction in Parika are the winding streets beyond the harbor. These cobbled streets were designed to keep out ransacking pirates. I really started to appreciate the designer's successful design when I was still getting lost after 4 days in the town.
After you've had your fun playing Captain Hook you should head off toward the Venetian Kastro (fortress) and the 6th-century church of Our Lady of a Hundred Doors. The Kastro is a bit of a steep hike, but it’s worth it to marvel at the way pieces of the original temple of Apollo and Demeter have been stuck into the walls of the kastro, houses, and churches of the area.
For great views over the harbor, you should hike up to the monastery on the mountain over Parika. It takes over an hour but the views of Parika and the harbour are fantastic. There's even a convenient and lovely picnic spot up here surrounded by trees. For directions and information, just ask the Paros Tourist Information, conveniently located inside the windmill on the harbor.
Getting in and out of Parika is quite easy. The main bus stop in Parika is located near the whitewashed church on the harbor front. From here you can also catch caique/boats (summer months only) across the bay to Krios beach, by far the most pleasant sandy stretch in the area.