Judging by the number of TV series dedicated to it, downsizing living spaces in extreme ways is a growing trend. FYI expands its popular franchise — also including “Tiny House Nation” and “Tiny House Hunting” — with a series that spotlights finding the ideal minihome abroad. Buyers in locations as diverse as Paris, Sydney and Dublin visit three homes to see which one best fits their budget and desires. The challenges loom large, however — even in the most exotic and exciting regions. Viewers see how tiny living has taken shape outside the U.S. and learn how different cultures approach design difficulties, space limitations and more.