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.
Kakslauttanen Arctic Resort - The famous Glass Igloos in Finland are definitly one of the most romantic Hotels of the world. Sleep under the Stars and in one of the world's best places for watching the Northern Lights.