The World's Most Interesting Borders: A Journey Through the Weird and Wonderful

4. Peru and Bolivia

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The Lake Titicaca border Area: 1,075 km (length of the entire boundary) Estimated Gross Domestic Product: $444 billion for Peru and $103 billion for Bolivia Bolivia and Peru are separated by the beautiful Lake Titicaca, the biggest freshwater lake in South America and the highest navigable body of water in the world. Perched at an astounding elevation of more than 3,800 metres, this vast lake is rich in Andean legend and mythology. According to Incan tradition, it is the birthplace of the sun.Peru and Bolivia Copyright: Stanley Belogrozow/Shutterstock The rich pre-Columbian history that both countries share is reflected in the sparkling azure waters and the scattered islands that have ancient ruins. The Lake Titicaca border region is a symbol of unification and a centre of shared identity and cooperation between Bolivia and Peru because of this natural wonder, which promotes a distinctive blend of biodiversity and cultural legacy.