Melissani Cave, on Kefalonia Island in Greece, features a sky-blue lake within the cave. The lake is shallow and clear, and is covered with stones at the bottom. The cave was rediscovered in (In Greek mythology, Melissani was the cave of the nymphs.
Haiku Stairs, Hawaii: Known as the Stairway to Heaven, this fairly unknown hiking trail can be found on the island of O’ahu. The trail is steep and ends at a peak feet above the sea, which offers amazing views of the island.
Craco is an abandoned commune and medieval village located in the Region of Basilicata and the Province of Matera in Italy. For safety, the entire population of residents moved to Craco Peschiera in leaving the town uninhabited.