Santorini is simply phenomenal and it is difficult to find a more beautiful place not only in Greece, but even in all of Europe. Bare cliffs, made of layers of red, white and greenish rocks, surrounding a huge caldera filled with the sea, make an amazing impression. The white houses in Fira or Oia are perched around steep slopes, and every step you will meet beautiful churches, covered with blue domes. If it weren't for the crowds of tourists, the island would be the best place to get potatoes.