Due to poor health, Moran moved to Orcas Island and between 1906 and 1909 built his estate, which included a large mansion named Rosario.

[5] In August 1935, 28 men from the 4768th Company of the Civilian Conservation Corps (CCC) began constructing a stone observation tower atop 2,407-foot (734 m) Mount Constitution.

Designed by noted Seattle architect Ellsworth Storey, the tower became the literal and figurative high point of eight years of work by crews from the CCC's Camp Moran.

The Mount Constitution observation tower commands sweeping marine views from the highest point in the San Juan Islands.

[2] Friends of Moran raise money for park needs through fundraising and by operating a small gift shop at the top of the mountain.