Nasby Building, Historical office building in Downtown Toledo, US

The Nasby Building is an eight-story office block at 605 Madison Avenue in downtown Toledo, built 1891–1895 to Edward Fallis's design. Its main block recalls the Chicago School, while a taller Renaissance-style tower stands nearest the corner of Madison and Huron, modeled after the Giralda in Seville. Since the 1960s glass and enameled asbestos panels have clad it and the adjacent Wayne Building as one Madison Building.

Built between 1891 and 1895, this structure held the title of Toledo's tallest building until the Nicholas Building surpassed it in 1906. Its construction marked an era of growth in the city's business sector.

The building's name comes from Petroleum V. Nasby, the pen name of David Ross Locke, editor of the Toledo Blade and a nationally read columnist during the Civil War and Reconstruction. The tower was modeled on the Giralda of Seville for the 400th anniversary of Columbus's 1492 voyage.

The Nasby Building stands at 605 Madison Avenue, at the corner with Huron Street in downtown Toledo. Since the 1960s its original facades have been hidden behind glass and enameled asbestos panels shared with the adjacent four-story Wayne Building, so look for the combined Madison Building frontage rather than a separate tower entrance.

The original building featured an ornate cupola that reached about 187 feet high, which was removed in the 1930s. This alteration significantly changed how the structure appeared from a distance.