Basilica

Basilica- A large rectangular building. Often built with a clerestory, side aisles separated from the center nave by colonnades, and an apse at one or both ends. Roman centers for administration, later adapted to Christian church use. Cothren, Michael. "Basilica." Fourth Edition Art History. 4. 1. Prentice Hall, 2011. Print.

http://www.roma-antica.co.uk/custom/St%20Peters.jpg