Glass House, Kalaignar Centenary Park

Kalaignar Centenary Park occupies land on Cathedral Road, opposite Semmozhi Poonga, that the state of Tamil Nadu recovered after a protracted legal battle. According to Wikipedia it was taken back from the Agri Horticultural Society, a private body, and the plot is worth around 1,000 crore rupees; OpenStreetMap still records the former name Horticultural Society Garden for the site. The press gives an area of 6.09 acres, Wikipedia 13.29 acres.

The state's chief minister, M. K. Stalin, laid the foundation stone on 27 February 2024. The park opened a little over seven months later, on Monday 7 October 2024, to mark the birth centenary of the former chief minister M. Karunanidhi, known as Kalaignar, after whom it is named. The Department of Horticulture and Plantation Crops, which built it, announced a cost of 46 crore rupees; its director spoke of 45 crore a few days after the opening.

The glasshouse was one of the flagship features of the project, together with a horticulture museum, an orchid house, an aviary and a 500-metre zip line. Within the first week visitors complained about the many separate charges, the glasshouse being ticketed on top of the park; the horticulture director replied that the site had to be well maintained and that the air conditioning runs all day. A footbridge is planned to link the park with Semmozhi Poonga, opened by Karunanidhi in 2010.

The glasshouse is one of the park's main buildings. DT Next gives it a floor area of 10,000 sq ft, about 930 m², and a height of 16 m; the Deccan Chronicle prints the same height but 1,000 sq ft, an isolated figure that other accounts of the park do not repeat. The building is air-conditioned: according to the horticulture director, air conditioners run throughout the day in several parts of the park, the glasshouse among them. The sources name neither an architect nor a contractor and do not describe the supporting structure.

Around it the park sets other artificially conditioned spaces: a 2,600 sq ft “Arctic” hut extended by a 120-foot snow path, a mist walk and a green cave, as well as an orchid house, a wooden house, artificial waterfalls and a musical fountain. The glasshouse is not mapped on OpenStreetMap, which shows only the outline of the park.

The glasshouse is devoted to ornamental flowering plants. DT Next describes it as a display of attractive flowering plants, and accounts published after the opening mention rare and exotic plants, including seven varieties of orchids grown under controlled conditions. No species list has been published, and the Department of Horticulture has not released a detailed description of the collection.

The rest of the park extends this plant display: a separate orchid house, a horticulture museum, a traditional vegetable garden and an aviary of exotic birds. Educational overviews of the park describe it as a place for botanical learning and for widening the city's plant diversity, right next to Semmozhi Poonga, which is presented as the city's first botanical garden.

The glasshouse stands in Kalaignar Centenary Park on Cathedral Road, a short walk from the Anna Flyover in central Chennai. Entry to it requires a ticket separate from the park admission. Half a day is enough to combine the glasshouse, the orchid house and the aviary, then cross the road to Semmozhi Poonga, which also provides visitor parking. In the hot months the air-conditioned glasshouse offers welcome shelter, and the nearby St George's Cathedral can round off the walk.