The closest foreign capital to eastern Saudis — 45 minutes over the causeway — hiding real depth: Dilmun of the Sumerian tablets, the historic natural-pearl capital (UNESCO Pearling Path in Muharraq), Bahrain Fort's fifty stacked centuries, and the Gulf's densest dining scene in Adliya. Cross before afternoon on Thursdays; BHD ≈ 10 SAR.