Construction of the campanile of the cathedral of Pisa (now known as the Leaning Tower of Pisa) begins; it will take two centuries to complete.

The church (later cathedral) of "Our Lady of Candlemas of Mayagüez (Puerto Rico)" is founded, establishing the basis for the founding of the city.

The Cathedral of Our Lady of Peace in Honolulu, Hawaii is dedicated. Now the cathedral of the Roman Catholic Diocese of Honolulu, it is the oldest Roman Catholic cathedral in continuous use in the United States.