360° panorama by Santiago Ribas - 360portugal.
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Neighboring the mouth of the river Leca, about a league north of the historic center of Porto, it is an original example of fortified religious architecture. Religious, Romanesque and Gothic architecture. Fortified, oriented hospitable church, with a longitudinal plan of three naves of four sections, with inscribed transept, tripartite, staggered head, and quadrangular bell tower adjoining the main facade.

http://www.360cities.net/image/matosinhos-monastery-of-leca-do-balio-tower-portugal