World's tallest statue of Virgin Mary with infant Christ is located in the town of Haskovo, Bulgaria. Officially known as 'Monument of The Blessed Virgin Mary', the statue which shows Virgin Mary holding infant Christ in her hands, is 14 metres (46 ft) high and stands on 17 metres (55 ft 9 in) high pedestal. Inside the pedestal is a small Bulgarian Orthodox Chapel resembling an ancient church and also features a stone altar.
Image from Panoramio is by Vladimir Tsekov
Image from Flickr is by Radoslav Rusinov
Image from Flickr is by Klearchos Kapoutsis
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Source of info and more info: Wikipedia / Official web page