Since they were not trained in building design, the padres could only try to emulate the architectural aspects of structures they remembered from their homeland. The missions exhibit a strong Roman influence in much of their design and construction techniques (as do many buildings in Spain), particularly in arch and dome construction. At Mission Santa Barbara, founding Father Ripali even went so far as to consult the works of 1st century B.C. Roman architect Vitruvius during the design phase of the project.