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Lake Titicaca, Bolivia/Peru

During a three week tour of South America in 2002, Vee and I saw the famous Lake Titicaca, which is a huge expanse of water covering more than 3,000 sq miles (8,000 sq km) with more than 30 islands, divided - roughly east and west - between Bolivia and Peru respectively. What struck us immediately was the colour of the water - it was just so blue or azure. However, the water is always freezing cold because the lake is located at 12,700 feet (3,810 metres) which makes it the world's highest navigable lake.