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Restrepo and wife Garcia are seen from their sewer home in Medellin

Miguel Restrepo (L), 62, and wife Maria Garcia are seen from their sewer home in Medellin December 4, 2012. The former drug addict has been living in an abandoned sewer with his wife and dog Blackie for 22 years. Their home, which is fitted with a kitchen, a fan, tv, a chair and a bed, is a 6 square meter wide and 1.4 meters high tunnel that leaks when it rains, and requires a manhole cover. REUTERS/Albeiro Lopera (COLOMBIA - Tags: SOCIETY POVERTY) - RTR3B7PH

Unusual homes

Snapshots of the most unusual homes around the world, including those built upside-down, in trees and out of ice.