Rapper PSY owns real estate in Seoul, including a property at the center of a legal dispute. Ethan Miller/Getty Images hide caption

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Marilyn Hack (middle) and her daughters Terez and Maliha have lived at the Villages of East Lake for 15 years. Hack was attracted by the safety and affordability. Elly Yu/WABE hide caption

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New apartment buildings are replacing empty lots in Mantua, one of Philadelphia's poorest neighborhoods. Will Figg for NPR hide caption

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Robert Laurindo recently opened Casa da Tapioca in favela Vidigal, in Rio de Janeiro. He purchased a two-level, one-bedroom building, which includes the cafe on the ground floor. Here, he serves his grandmother's tapioca recipes to Elizangela Ferreiro, right, and her daughter, Jessica da Silva, originally from Sao Paulo, who recently moved to Vidigal. Lianne Milton for NPR hide caption

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