Murbach Abbey in Alsace completed.
Tewkesbury Abbey in England completed.
c. 1150 - Roof lantern of Florence Baptistery constructed.
Church of St. Stephen at Marmoutier Abbey, Alsace, constructed.
Bisaldeo temple in Vigrahapura, Sapadalaksha, constructed.
1151 - Zamora Cathedral in Spain begun.
1152 - Great St. Martin Church, Cologne begun.
1153 - Pisa Baptistry in Italy begun by Diotisalvi.
1155 - Basilica of San Michele Maggiore, Pavia, Italy completed. It is one of the best surviving examples of Lombard Romanesque architecture.
1156 - In France:
Senlis Cathedral begun.
Reconstruction of Château de Chinon begun.
Mid 12th century - Romanesque church of Saint-Nectaire, Puy-de-Dôme, France built.
January 13, 1151 - Abbot Suger (b. c.1081), French abbot-statesmen and patron of Gothic architecture.
1150s in architecture Wikipedia