The former capital of Bahrain and the second biggest city, where one can witness the more 'cultural' face of the Kingdom
This is where Bahrain's international airport is located.
From Manama you can easily get to Muharraq using one of the 3 modern causeways: 'Sheikh Isa Bin Salma', 'Sheikh Hamad' and 'Sheikh Khalifa Bin Salman'. All of them will lead you to the airport.
Drive to Amwaj, it's a far more developed "western-friendly" residential compound and its only 10 minutes away from the airport. It has top-notch hotels and resorts such as The Dragon and multiple of (pricey) restaurants one can choose from, such as Burger lounge, or the more luxarious Mojo - which also comes with a bar and a nightclub. The city is still largely under construction - A mall, a school, a hospital and tens of new apartments and hotels are still on their way. (as of 2011)
The city is also known for its traditional market, or souq
Bars are no where present in the more 'conservative' city of Muharraq, however, one can enjoy a stay the the various Gahwas all around the city for Sheesha (Hookah), as well as mint tea, turkish coffee, Arabic coffee, or fresh juice.
It would be preferred to dress "modestly" when in Muharraq City. Meaning; avoid shorts and sleeveless.