Santorini (Island) – a.k.a. Thera, this island, located in the southern Aegean Sea 200 km. southeast of the Greek mainland (a 7 ½ hour ferry ride from Piraeus/Athens port — via Blue Star Ferries, and Aegeon Pelagos Sea Lines), is the crescent-like remains of a volcano that erupted as far back as 1,600 BC. Such a dramatic history has resulted in the formation of one of Greece’s most eye-catching islands – in effect, a caldera. Firá is the picturesque capital of Santorini; perched high up on the edge of the caldera, it looks like a captivating painting. Firá, together with Oia, Imerovígli and Firostefáni located high above on a cliff, make up the so-called “Caldera’s eyebrow”, the balcony of Santorini, which offers an amazing view of the volcano. Santorini’s beaches contain white, red and black sand, along with volcanic pebbles, spectacular rock formations.