In the past two decades, the southeastern United States has experienced a profound increase in immigration from Mexico and other parts of Latin America, which has altered the region’s physical and social landscapes. This dissertation explores the role that religious institutions play in both shaping the contours of these landscapes and providing tools with which immigrants and transmigrants can navigate the difficult terrain on which they reside. Using ethnographic research methods that include structured, semi-structured, and life-history interviews, participant observation, and examination of material culture, I conceptually map the terrain of Doraville, Georgia. I then compare the physical spaces of two mostly Mexican churches there, the practices that take shape in these spaces, and the ways in which church members interpret these practices. This comparison clarifies the range of possible relationships established between immigrant religious institutions and U.S. society, highlighting how immigrants’ and transmigrants’ ties to their place of origin shape these relationships. I argue that immigrant religious institutions serve not simply as “refuge from America,” by neatly transposing artifacts and practices from place of origin to place of residence, nor do they simply assist immigrants in “becoming American” by embracing an ethnic identity with which to enter into multicultural United States society. Rather, they encourage the formation of hybrid practices and identities that both engage the United States public and maintain ties to locality, region, or country of origin.