Indonesia–Malaysia border crossings. Illegal immigrants are also known to use such crossings. There are numerous scheduled sea crossings between Indonesia and Malaysia, mostly between ports in the former's island of Sumatra and Peninsula Malaysia. Here is a list of ports (Indonesian port followed by the Malaysian port) where scheduled boat services operate as of April 2008: Sumatra-Peninsula Malaysia North Kalimantan-Sabah Indonesia–Malaysia border The border between the Southeast Asian countries of Indonesia and Malaysia consist of both a land border separating the two countries' territories on the island of Borneo as well as maritime boundaries along the length of the Straits of Malacca,
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.