Endangered Monuments

top 10 world monuments 2010
Michael Lewis / Corbis

Teatro Colón, Buenos Aires
This grand performance space (the Columbus Theater, in English) is considered one of the greatest opera houses ever built. It was completed after 20 years of construction in 1908, a time when Argentina was among the world's most prosperous countries. The Renaissance-style structure seats 2,500 and has hosted the world's great singers and conductors. The deterioration of the Argentine economy has raised concern about the nation's ability to properly maintain this architectural and historic treasure.

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