Granite in St. Louis Buildings The Old Post Office is an extremely solid building made of gray granite from Maine (top) and pink granite from Missouri (bottom). The Merchandise Mart at 1000 Washington Avenue uses red granite - some is polished, and some is left rock-faced to provide the impression of great strength. The Basilica Cathedral of St. Louis (aka the New Cathedral) is one of the largest granite structures around. The exterior of the St. Louis Public Library is gray granite. Wood Clay Stone Identify It!		More About Stone Limestone   Where Does It Come From?   Limestone in St Louis Buildings Granite   Where Does It Come From?   Granite in St Louis Buildings Marble   Where Does It Come From?   Looking at Marble in St Louis Related Links Old Post Office Merchandise Mart Basilica Cathedral of St Louis St Louis Public Library
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