The Centennial International Exhibition of 1876... and flowers...

Horticulture had held an important place in this Exposition, and a huge pavilion had been reserved for this floral exhibition.

What's more complementary, to accompany the flowers, what a charming young woman of the time ?
as demonstrated by this colorized photograph...

The Horticultural Hall built for the Exposition was meant to be permanent. Horticultural Hall was designed by Herman J. Schwarzmann, an engineer for the Fairmount Park Commission, who had never designed a building before. Horticultural Hall had an iron and glass frame on a brick and marble foundation and was 383 ft (117 m) long, 193 ft (59 m) wide and 68 ft (21 m) tall.

The building was styled after Moorish architecture and designed as a tribute to The Crystal Palace from London's Great Exhibition. The building's exhibits specialized in horticulture and after the Exposition it continued to exhibit plants until it was badly damaged by Hurricane Hazel in 1954 and was demolished.

Horticultural Hall during the 1876 Exposition.