Borneo, the third largest island in the world, is home to more than 11,000 different species of flowering plants. After the monsoon season ends around March, the island comes alive with colorful blooms that make this a picturesque nature travel destination. The rafflesia is perhaps the most well-known flower in Borneo and the largest flower in the world. Lucky guests on IE’s Borneo tour Poring Hot Springs, part of Kinabalu National Park, where the rafflesia grows.