Hotel Iowa

The seven-story structure was designed by St. Louis architect Guy C. Mariner,[2] and built from 1912 to 1913 by the Guaranty Construction Company of Chicago.

It was also the largest hotel in Keokuk and the only one built with "modern" construction methods utilizing "fireproof" and new structural building techniques.

The structure is supported by fifty-seven full height reinforced concrete columns.

It also features concrete floors and roof with an exterior composed of brick and tile curtain walls.

Sullivanesque ornamentation is featured on the main level, and a decorative belt course is located between the six and the seventh floors.