East Malaysia is 50% bigger than Peninsular Malaysia at , comparable with South Dakota or Great Britain. East Malaysia contains the five highest mountains in Malaysia, the highest being Mount Kinabalu at 4095 m, which is also the highest mountain in Borneo and the 10th highest mountain peak in Southeast Asia. It also contains the two longest rivers in Malaysia – Rajang River and Kinabatangan River. Banggi Island in Sabah and Bruit Island in Sarawak are the two largest islands that are located entirely within Malaysia. The largest island is Borneo, which is shared with Indonesia and Brunei. The second largest island
Indonesia–Malaysia relations reaching 2,548,021 visitors in 2013. On the other hand, Malaysians are also the second largest visitors for Indonesia, reaching 1,302,237 travellers in 2011. The top visitors of both countries are Singaporean visitors. Kuala Lumpur, Malacca and Penang are popular destinations for Indonesian travellers, and vice versa Bandung, Medan and Bukittinggi are particularly popular among Malaysian tourist. Indonesia–Malaysia relations Indonesia–Malaysia relations (Indonesian and ; Jawi: هوبوڠن إندونيسيا–مليسيا) are foreign bilateral relations between Indonesia and Malaysia, and it is one of the most important bilateral relationships in Southeast Asia. Indonesia and Malaysia are two neighbouring nations that share similarities in many aspects.