Vasai / Bassein Fort

Portuguese mariners exploring the north Konkan Coast, discovered the Arab Sultanate of Khambat or Cambay, building or renovating or expanding the fort in the early 1400s and attacked it in a failed effort to seize it. Later, after more systematic efforts, the Sultanate of Cambay ceded the fort to Portugal by the Treaty of Saint Matthew signed on the Portuguese brig Sao Matteus anchored in the Bhayander Creek or Vasai Harbor.