In partnership with Indianapolis City Market, Indiana Landmarks offers guided tours of an unusual site hidden from public view. These tours explore the Catacombs, a Roman-looking expanse of brick arches beneath the outdoor Whistler Plaza of City Market. Along the way, guides share stories of two historic buildings, City Market and Tomlinson Hall.

The Catacombs qualify as both a ruin and a redevelopment opportunity. They’re what remains of Tomlinson Hall, which burned in January 1958, turning Market Street into an icy lake as firefighters battled the blaze. The city took down the remains later that year. Our Catacombs don’t contain bones or crypts—at least none that we know of—but rather scores of brick barrel-vaulted arches.