A thirty-minute walk takes you to Aladža Troglodytic Monastery. Occupied during the 13C and 14C, it has retained niches hollowed into a limestone cliff over a height of several storeys. The chapel of the deceased, the refectory and the monks' cells are on the first level, 10m above ground level. On the second level, the rock church, decorated with remarkable frescoes, offers a splendid view of the Black Sea. Not to be missed: the catacombs, a small museum devoted to monastic life and terraces reserved, in summer, to cultural events.