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St. Peter's Cathedral, Cologne, Germany.  Built by Jürgen Bramigk in 2008, this Lego model of Cologne Cathedral is made up of more than 900,000 pieces and is three meters high. This sanctuary is the most visited monument in Germany, with more than 5 million visitors a year. Pope Benedict XVI launched World Youth Day there in 2005.

© Marco Verch | FLICKR ( CC BY 2.0 )