[5] In 2017, a greenhouse complex at the rear of the Conservatory was opened to replace previous off-site facilities.

[6] In 2019, after years of deterioration and falling concrete debris, Gallagher Museum Services was hired to do a study of the three domes.

[7] This recommendation has been rebuked by the National Trust for Historic Preservation[8] and Milwaukee County Supervisor Jason Haas said it has no impact on the future of the domes.

It hosts four seasonal shows and one holiday exhibit held annually in December for visitors to enjoy.

Each show has a theme chosen based on cultural (such as Japanese, German and French), literary (Charles Dickens "A Christmas Carol"), or historical interest (Colonial Williamsburg and the History of Herb Gardening, for example).

In most recent years, the Winter Show has featured an extensive garden railway display put on with the cooperation of many Wisconsin Model Railroad club members.

The dome is seasonally decorated with a wide variety of blooming plants, including a number of award-winning orchids.

The American section contains a large number of plants native to the Sonoran Desert, including shrubs, trees, annuals and bulbs, as well as the familiar cacti.

The African section has aloes, crassulas, euphorbias, along with the unusual Welwitschia plant, which has only two continuously growing leaves and may live for over a thousand years.

Another section hosts the succulent flora of Madagascar and includes plants such as Euphorbia, Pachypodium, Adenia, Didierea, Alluaudia, and Operculicarya.

Also found on park grounds, at a bluff overlooking the Menomonee Valley, is a monument marking the site of an early trading post built by Jacques Vieau.