you want "spectacular" ? "romantic"? "spellbinding"?
I highly suggest --no urge---you to go to Italy
Take your pick----Rome, Venice, Florence, Isle of Capri..., Isle of Ischyia
or the more sedate Lake Region up north, Lake Como, Lake Lugano ....or try the Amalfi Coast (south of Naples)....Positano...
I guarantee you WILL NOT be dissapointed