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| Holy Trinity Cathedral (1899-1900) (1121 North Leavitt St.). Chicago, IL. Architect: Louis H. Sullivan. On National Register. | Tower of Holy Trinity Cathedral. Chicago, IL. | Orthodox bulb atop Tower of Holy Trinity Cathedral. Chicago, IL. | Woodwork details of Tower of Holy Trinity Cathedral. Chicago, IL. |
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| Octagonal narthex structure of Holy Trinity Cathedral. Chicago, IL. | Front of Sullivan's Holy Trinity Cathedral. Chicago, IL. | Porch overhang of Holy Trinity Cathedral. Chicago, IL. | Porch carving details of Holy Trinity Cathedral. Chicago, IL. |
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| Side windows of Holy Trinity Cathedral. Chicago, IL. | Narthex interior of Holy Trinity Cathedral. Chicago, IL. | Screen of saints in Holy Trinity Cathedral. Chicago, IL. | Hanging lamp in Holy Trinity Cathedral. Chicago, IL. |
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| Paintings of saints in Holy Trinity Cathedral. Chicago, IL. | Office building beside Holy Trinity Cathedral. Chicago, IL. | Office building eves beside Holy Trinity Cathedral. Chicago, IL. |
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