Santorini (Greece)

Yes, it's on every "romantic destinations" list for a reason. Oia's blue-domed churches against the caldera at sunset is not a cliche — it's a religious experience. But skip the crowds and head to Pyrgos or Imerovigli for the same views with a fraction of the tourists. A bottle of Assyrtiko wine on a cliffside terrace as the Aegean turns pink is worth every euro.