Mount Gretna is a borough in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, PA Metropolitan Statistical Area. The population was 196 at the 2010 census. Attracted by the area's natural landscape and beauty, it was founded by the Pennsylvania Chautauqua Society by the 1890s.It is a popular destination in the summer, for it has a nationally ranked juried art show, jazz and chamber music concerts, lectures, book reviews, and... Show more

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