Old Customhouse - Credit: Wikimedia Commons
The Old Custom House is a historic government building in downtown Cairo, Illinois. Built from 1869 to 1872, the building served as a customs house, post office, and courthouse. Alfred B. Mullett, the U.S. Supervising Architect at the time, designed the building in the Italianate style, a rarity among federal buildings; his design features a bracketed cornice and rounded windows. When Cairo built a new post office in 1942, the building became the town's police station. The building is one of the few surviving U.S. custom houses and one of the largest federal buildings of its era in the Mid-Mississippi Valley region. Read more on Wikipedia
Source: en.wikipedia.org