5Santorini, Greece

Santorini is famous for its white-washed buildings, blue-domed churches, and stunning sunsets.

However, this small island has struggled to cope with the number of tourists it attracts. Overcrowding has strained the island’s infrastructure, and the government has introduced measures to limit the number of daily visitors.
The goal is to protect the island’s natural beauty and ensure it remains a sustainable destination for residents and future visitors.