From the Town of Castle Rock Historic Preservation Board: (
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The elegant detail on the building at 300 Wilcox anchors the south end of this historic block. The two-story stone building constructed in 1904 was originally The First National Bank of Douglas County until it closed during the Depression in 1933.
In 1937 it was purchased and re-opened by the Masons for Douglas Lodge No. 153 AF and AM. The building features eaves with cornice boxed brackets and frieze decorations. All windows are rectangular with transoms. Above the second floor windows are panels with a recessed fan design and radiating voussouirs. The building’s walls were constructed of local rhyolite stone. There is a unique double Roman arched front entrance. The style is considered Richardsonian/Romanesque. Look for restoration of the cupola and windows.