Not counting locales I passed through or saw only the inside of the airport, since 1991, I’ve visited over a dozen countries on four continents (not including the U.S., where I live), and here are the ones that make the list of places I would gladly return to.
Europe: France (Paris), Italy (Rome, Florence), Hungary (Budapest), Romania (Brasov), Bulgaria (Veliko Turnovo), Turkey (Istanbul)
Asia: Syria (Damascus)
Central America: Nicaragua (Granada, Lake Nicaragua)
Africa: Egypt (Cairo, Luxor)
North America: Canada (Montreal)