The World's Most Unusual Borders: You Won't Believe Where These Countries End
10. Guyana, Venezuela, and Brazil
Border: Mount Roraima
Area: N/A
Estimated Gross Domestic Product: $92.21 billion (Venezuela) / $3.351 trillion (Brazil) / $40 billion (Guyana)
Mount Roraima serves as a striking natural border between Venezuela, Brazil, and Guyana, distinguished by its imposing tabletop peak. This geological marvel is part of the Pakaraima mountain range and features sheer cliffs rising over 400 meters, creating a dramatic landscape that captivates adventurers and nature lovers alike.
The plateau of Mount Roraima is often shrouded in clouds, giving it an eerie and mysterious atmosphere. This unique environment hosts a diverse array of flora and fauna, some of which are found nowhere else on Earth, making it a significant site for biodiversity.

The peak of Mount Roraima boasts a unique ecosystem, home to endemic species that have evolved in isolation over millennia. This remarkable biodiversity has made Roraima famous as the inspiration for Sir Arthur Conan Doyle's novel The Lost World, highlighting its otherworldly landscapes and biological significance.
As an international symbol of conservation, Mount Roraima underscores the shared environmental legacy of Venezuela, Brazil, and Guyana. Its majestic presence transcends national boundaries, reminding us of the importance of collaborative efforts to protect such unique ecosystems.