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http://en.wikipedia.org/wiki/Santa_Maria_in_Aracoeli

 

http://it.wikipedia.org/wiki/Basilica_di_Santa_Maria_in_Aracoeli

[...]COLA DI RIENZO INAUGURATED THE MONUMENTAL STAIRWAY OF 124 STEPS IN FRONT OF THE CHURCH, DESIGNED IN 1348 BY SIMONE ANDREOZZI, AS A VOTE TO THE VIRGIN TO AVOID THE PLAGUE.