In the mid-1800s, Madeline Island started becoming a vacation destination for wealthy Midwesterners. Though some attempts were made to develop the island, nothing was very successful until the 1890s when an increasing number of tourists built summer homes on the island.

In the early 20th century, Dr. A. G. and Cora Hull came to Madeline Island and built a luxurious summer home, completed in 1913, which they named Coole Park Manor. Kansas City architects Edmund Wilder and Thomas Wight designed the home. Wilder and Wight primarily worked on commercial buildings and it was quite unusual for them to design a residence. The manor included a 15-room main house, two guest houses, and several service buildings. The rustic materials, large porches, and rambling nature of the house all help to mask its actual size and give it a more informal appearance.

Created to be a retreat, Coole Park Manor embodies the leisure lifestyle that wealthy Midwesterners such as the Hulls consciously created for their vacation homes. About 1920, the Hulls’ daughter Elizabeth designed and built the estate's formal gardens. The gardens are unusual for Madeline Island, which typically is marked with forests and natural undergrowth.

In 1947, the Hulls sold Coole Park Manor. The Vennums of Minneapolis turned the house into a resort and changed the name to Chateau Madeline.

The property is privately owned. Please respect the privacy of the owners.