Santorini, Greece (16/20)

Santorini is known for its beautiful sunsets and whitewashed buildings, but its extreme popularity has made it overcrowded, especially during peak summer months. Prices for food, accommodations, and even transportation have skyrocketed, making it less enjoyable for many travelers.

Alternative: Visit the quieter island of Naxos or the less-touristy island of Milos for stunning views, local charm, and more affordable prices.