The Bulgarian Black Sea coast strings the UNESCO old town of Nesebar on its peninsula, Sozopol's wooden-house old core, and the Cape Kaliakra cliffs falling vertically to the sea.
Sea warming, Sozopol Apollonia Festival of Arts in early September aside, the early summer brings Nesebar walking comfortable before the package-tour density.
Sunny Beach and Golden Sands at peak with budget package tours from northern Europe, and Sozopol Apollonia Arts in early September aside, the season is busy.
Sea at warmest, Apollonia Festival of Arts in early September fills Sozopol with concerts, and Cape Kaliakra cliffs at peak photogenic in autumn light.
Cold Black Sea winters with most resorts closed, but Varna and Burgas remain open year-round, and the Black Sea storm watching makes coastline drives memorable.