Mount Everest is the highest mountain in the world, but it is not a UNESCO World Heritage Site.

The Amazon Rainforest is the largest World Heritage Site in the world, covering an area of over 5 million square kilometers.

Italy has the most World Heritage Sites, with 58 sites inscribed on the UNESCO World Heritage List.

Stonehenge is the oldest World Heritage Site, dating back to around 3000 BC.

Machu Picchu is an ancient city located in the Andes Mountains of Peru, and is known as the 'Lost City of the Incas'.

The Great Barrier Reef is the largest coral reef system in the world, stretching for over 2,300 kilometers along the coast of Queensland, Australia.

Uluru (Ayers Rock) is a large sandstone monolith located in the Northern Territory of Australia, and is known for its iconic shape and red color.

Northeast Greenland National Park is the largest national park in the world, covering an area of over 972,000 square kilometers.

Cappadocia is a region in central Turkey known for its unique rock formations, including fairy chimneys, caves, and underground cities.

The Sahara Desert is the largest desert in the world, covering an area of over 9 million square kilometers.

Petra is an ancient city located in Jordan, and is known for its well-preserved ruins, including the Treasury, the Amphitheatre, and the Royal Tombs.

The Amazon Rainforest is the largest rainforest in the world, covering an area of over 5 million square kilometers.

The Sa Pa Terraced Rice Fields are located in the mountainous region of northern Vietnam, and are known for their stunning beauty and cultural significance.

The Andes Mountains are the longest continental mountain range in the world, stretching for over 7,000 kilometers along the western coast of South America.

The Galapagos Islands are an archipelago located in the Pacific Ocean, and are known for their unique biodiversity, including giant tortoises, marine iguanas, and Darwin's finches.