Johor Bahru is the state capital of the state of Johor and the second largest metropolitan area in Malaysia. Most tourists don't stop here and just pass through the city on their way to or out of Singapore. JB is a major local transportation hub however. Since it is just across the causeway from Singapore, some travellers use it as a hub to visit Singapore from here (lower accommodation prices) or to board the train, bus or airplane.
Penang is the name of an island in the Straits of Malacca, and also of one of the states of Malaysia, located on the north-west coast of peninsular Malaysia. Penang is the second smallest state in Malaysia after Perlis, and the eighth most populous. A resident of Penang is colloquially known as a Penangite. The city Georgetown is the 2nd biggest city in Malaysia and traveller′s hub.