Cambridge Butterfly Conservatory

The Cambridge butterfly house is a private business rather than an annex of a botanical garden or zoo. It opened to the public on 26 January 2001 as the Wings of Paradise Butterfly Conservatory, on a 107-acre (about 43 ha) property on the north-eastern edge of the city along Kossuth Road, which includes part of the environmentally sensitive Kossuth Bog. The Doors Open Ontario programme gives 2002 as the year of construction while dating the attraction's activity from 2001; the operator itself keeps January 2001.

In 2010 the attraction took the name Cambridge Butterfly Conservatory, considered a better reflection of its location and purpose; an Ontario hiking blog places the change in 2011. A privately owned Canadian corporation run by a board of directors, it lives entirely on its own income: admissions, gift shop, café and the hire of its spaces, weddings included. It is a founding member of the Waterloo region's tourism marketing body and describes its mission as a balance between attraction, education, research and conservation.

Closed in spring 2020 during the pandemic, the greenhouse reopened on 23 June of that year with timed tickets and a one-way route; booking by time slot has remained the rule since. The operator has announced a four-day closure for renovations from 2 to 5 November 2026.

The building totals some 25,000 square feet, or 2,322 m² according to Doors Open Ontario. The covered tropical garden takes up 10,800 square feet of it, around 1,000 m²: the operator describes it as a fully indoor, climate-controlled tropical greenhouse, and an Ontario travel guide adds that rainwater collected from the glass roof feeds the koi ponds.

Inside, the space is laid out as a garden, with waterfalls, one of them described as two storeys high, streams, reflecting pools and a pond stocked with goldfish and red-eared slider turtles. An emergence window displays the hanging chrysalises until the butterflies take wing. The temperature is kept at around 25 to 26 °C, with rainforest humidity. Around the greenhouse, the same building holds the entrance hall, two galleries of live and mounted insects, an axolotl exhibit, the Chrysalis Café with its patio and the gift shop. Outside are a nature playground, a pollinator garden and a wildflower meadow, open in the warmer months.

The greenhouse permanently holds more than 2,000 free-flying butterflies of some forty species, among them the blue morpho, the paper kite, the golden birdwing, the emerald swallowtail and the monarch. None is taken from the wild: chrysalises arrive each week from butterfly farms in Costa Rica and the Philippines, with one guide also naming Kenya, and a few species are bred on site, so that all four stages of metamorphosis can be seen. More than a hundred kinds of tropical plants make up the setting, home to zebra finches, Chinese painted quail, turtles and fish. The galleries show live and mounted insects, a leafcutter ant colony, frogs and an axolotl exhibit; a photographic gallery, Moths Magnified, is devoted to the moth portraits of the late Canadian photographer Jim des Rivières.

The conservatory lies some ten minutes north-east of downtown Cambridge and about an hour's drive west of Toronto, close to Highway 401, with free parking. The visit is self-guided and takes one to two hours: the loop through the tropical garden, which can be walked several times, then the insect galleries. Entry is booked online by time slot, and tickets often sell out. Emergences peak from February to April, and the year is punctuated by themed weekends devoted to monarch tagging, woolly bear caterpillars or an outdoor butterfly and bug hunt. The Mediterranean Garden at the Royal Botanical Gardens in Burlington and the Floral Showhouse at Niagara Falls round off a tour of southern Ontario's glasshouses.