Well, they’re not just “places” …they’re entire countries. If they intrigue you, then start planning a trip to these countries, and figure out what places within these countries interest you.

As for the time of year you plan to travel…Spring Break falls toward the end of March, and I’m not a huge fan of the Mediterranean that time of the year (unpredictable time of year weather-wise, strong chance you’ll get cold/damp/rainy weather). You said you you already backpacked Europe, so if that included Spain, Italy, or southern France, then we’re talking the same climate in Greece and Turkey. Greece also has the same South Euro culture as Spain/Italy/South France, so expect everyone and their grandmother to be out and about late into the night on those nice summer weekend evenings…something that you won’t experience in March. Some travelers don’t like the Med during July-August either (I do)…but you can’t go wrong with April-June or September-early October.

If you must travel during Spring Break, then Egypt is a good bet. The weather should be very good in Egypt.

Spring break in Greece may be logistically tough. Islands that have 2 or 3 ferries each day in summer may only have 2 ferries a week in winter. Hostels and hotels on some islands will be closed. You can certainly have an enjoyable visit in Greece in March, but it will take more planning and preparation than a summer visit and you won’t be enjoying the beaches.

I loved Istanbul and really enjoyed a visit to ancient Ephesis, which would be a good possibility to include in a “Turkish Riviera” (Turquoise coast) visit. Average daily high on the coast in March is 18 degrees c (66 degrees f) and the average low is 8 (46) — OK for sightseeing if it isn’t raining, but not beach weather.