In 1888, the city celebrated its 100th birthday with the Centennial Exposition, held in Music Hall and in two temporary structures built especially for the occasion. In that year, at least 6,000 manufacturers in the city employed 93,500 workers. Cincinnati was a world leader in soap production, carriage manufacturing, beer brewing, whiskey distilling, and lithographic printing. In Over-the-Rhine, hundreds of small businesses flourished, each employing a handful of skilled craftsmen who made fine products—including musical instruments, wood carvings, and blown glass—many in the space of their own homes. The city had also become a center for the arts and art education.