GRINNELL, Iowa - When walking into this structure, typical conversation becomes hushed. This isn’t a church, but you could say it used to be a holy place of capitalism.

The old Merchants’ National Bank in Grinnell is one of just a handful of banks designed by American architect Louis Sullivan.

The board of Merchants’ National Bank approached Sullivan to construct the structure at a prominent spot in downtown Grinnell. The building was finished in 1914.

Sullivan’s touches are notable all over the building. A stunning stained glass window is found on the east side of the building, so sunlight could shine down on the tellers. The tall ceilings culminate in blue stained glass along the ceiling. Onlookers will find intricate carvings inside and out.

Sullivan hoped to cultivate a sense of se

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