[2] In the 1990s it was noted the greenhouse was suffering foundation damage from soil settling of up to 65-foot (20 m) deep fill on which it was built.

[3] A 1995 report indicated that there was fear of a landslide causing catastrophe to the building, built next to a steep ravine where "a number of springs and wet areas were observed" (Olympia is noted for both its rainy climate and its artesian springs).

[3] Heritage Park's hillside trail climbs from Capitol Lake to a landing containing the Law Enforcement Memorial, adjacent to the conservatory.

[4] Due to safety concerns stemming from the settling, the conservatory was closed in 2008[5] and the building was demolished between 2020 and 2021.

[8][9] The gardens and grounds at the Capitol campus were filled with plants grown in the conservatory.