UNESCO has recognized many amazing geological sites around the world as World Heritage Sites. Here are some of the most famous ones:

1. Grand Canyon National Park (USA)

   • Size: Over 1.2 million acres
   • Depth: More than 6,000 feet deep

2. Giant's Causeway (Northern Ireland)

   • Made up of 40,000 unique basalt columns that fit together like a puzzle

3. Tsingy de Bemaraha (Madagascar)

   • Known for its sharp limestone towers, some taller than 70 meters

4. Uluru-Kata Tjuta National Park (Australia)

   • Home to the famous Uluru rock, which stands 348 meters high above the flat land

These sites are special because of their natural beauty and unique features!