The Qala’at al-Bahrain (Bahrain Fort) is located off the northern shore and is a five to ten minute drive away from Manama city. It is restored and in good condition although it lacks furniture, signage, or exhibits. Admission is free.
Next door to the fort is a museum, completed in February 2008, which contains many artifacts ranging from the ancient Dilmun periods through the Islamic era, many of which were found at the fort and additional ruins next door. The museum is a large rectangular and white building with absolutely no signs to indicate that it is a museum. The hours are 8AM-2PM daily; admission is free.
Tree of Life. Although trees grow in Bahrain, this one is special because of its location in the middle of the desert amidst the oil wells and other infrastructure of the petroleum industry. You need a car to reach the tree, as it is far from the main roads and not on any public transportation route.