With an eye toward bringing tourism to downtown Terrell, the City Council on Tuesday committed $400,000 for architectural services at the former Chapman Building on Moore Avenue. When completed, the building will serve as the downtown wing of Terrellâs No. British Flying Training School Museum, which is located near the municipal airport. The money, which was transferred to the city by a downtown tax incremental financing district, will pay $340,000 for services by commercial and preservation architect Mark Thacker, who will design a plan to renovate and convert the old building to a future downtown showplace. City Manager Mike Sims told the council that when all is said and done, the overall cost of the project could approach $4.5 million.