Taipei is on an island.
Taipei . Sitting at the northern tip of the island , Taipei City is an enclave of the municipality of New Taipei City . Taiwan ( [ taɪˈwɑːn ] ) , officially the Republic of China ( ROC ) , is a state in East Asia . The island of Taiwan , also known as Formosa , was mainly inhabited by Taiwanese aborigines before the 17th century , when Dutch and Spanish colonies opened the island to Han Chinese immigration .