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A masterpiece of American architecture, Trinity Church is the country's ultimate example of Richardsonian Romanesque. The granite exterior, with a massive portico and side cloister, uses sandstone in colorful patterns. The interior is an awe-striking array of murals and stained glass, most by artist John LaFarge, who cooperated closely with architect Henry Hobson Richardson to create an integrated composition of shapes, colors and textures. Free architectural tours are offered following Sunday service; on other days there's a modest admission fee.