Greece rewards travellers who plan their route around its highlights rather than trying to see everything. This guide covers the must-see sights that consistently deliver a memorable experience. Cultural and heritage highlights Acropolis of Athens tops most itineraries for good reason — it captures the essence of Greek history and architecture in a single visit. Combine it with Santorini caldera and Meteora monasteries for a well-rounded introduction. Allow at least a full day for the main heritage cluster; two days if you want to explore side alleys and museums at a leisurely pace. Nature and outdoor experiences Delphi ruins draws visitors seeking natural beauty. Access is straightforward from Athens or Thessaloniki, and local guides speak enough English for a rewarding day trip. Knossos Palace Crete adds another dimension — combine it with the previous stop for a two-day loop that many first-time visitors call the highlight of their trip. Off-the-beaten-track finds Rhodes Old Town (UNESCO) sits away from the main tourist route and rewards travellers who venture beyond the obvious. Rental cars, local buses and organized day trips all serve this route. Planning your visit The best season to visit is April to June and September to October for shoulder season. Weather is reliable and crowds manageable. Book high-demand sites in advance during peak months. Currency is Euro (EUR). Card payment works in cities; carry cash for entrance fees and small businesses at rural attractions. Public transport connects major sights but a rental car unlocks the most flexibility for off-the-beaten-track destinations. Discover the complete list of top attractions in Greece at hellasforall.com — each entry includes opening hours, ticket prices, photos, GPS location and reviews from recent visitors.