Johor Bahru is the capital city for the state of Johor, a state in Peninsular Malaysia. Johor Bahru is the fastest growing city in Malaysia after Kuala Lumpur. It is the currently the main commercial center for Johor. Johor Bahru is located along the straits of Johor, adjacent to Singapore. It is also adjacent to Iskandar Puteri and Pasir Gudang. Johor Bahru is the busiest international land border crossing in the world, where it is directly linked to Singapore through the Johor-Singapore Causeway. Due to this, it has a very close economic relationship with Singapore. Many residents of Johor Bahru travel back and forth daily to work in Singapore.