Throughout the Progressive Era, settlement houses in the urban Northeast and Midwest operated robust summer camp programs for the children of their neighborhoods. Each summer, campers enjoyed two weeks of hiking, swimming, nature study, and relaxation. This article argues that summer camps exemplified the environmental agenda of settlement-house workers during the Progressive Era. Unlike smoke abatement, sanitation reform, or playground construction, which addressed isolated components of the urban environment, camps allowed them to articulate a deeply ecological critique of the industrial city. Settlement-house workers constructed camp landscapes and daily programming in response to problems endemic to atmosphere, city streets, and immigrants’ homes, providing children with a total environmental change while meanwhile pursuing slower and more piecemeal reforms back in the city. Settlement house leaders and other Progressive Era reformers discerned an intimate connection between landscapes and morality, which summer camps allowed them to address since they could reform individual behavior in addition to combatting structural inequities. Summer camps demonstrate that settlement-house workers’ environmental philosophy permeated their reform agendas, influencing social work and recreation in addition to politics and public health.