Sozopol is the oldest town on Bulgaria’s Black Sea Coast. There are still buildings and ruins stretching back to the fourth century, along with a wonderfully intact old town of cobbled streets and medieval stone and wood houses. In 2002 the Sozopol Foundation was established to ensure the town’s sustainability as it grew in popularity with tourists. At that time the coastline was strewn with waste and there were constant leaks from the sewers. Today the town been restored to make it accessible to as many people as possible – so much so that Sozopol is one of just six members of the League of Historical and Accessible Cities.