Along Highway 237 between Warrenton and Round Top, TX - at just over 250 square feet, Saint Martin’s is said to be the World’s smallest Catholic Church. The simple white frame structure is home to an equally small congregation that meets there for Mass once a month. - See more at: http://blog.tourtexas.com/blog/texas-tourist-information#sthash.xV5Wz8wB.dpuf