Lookout Mountain (48.5522222, -121.3316331) There are more than a few Lookout Mountains around, so for clarity, this is the Lookout Mountain Lookout located near Marblemount off the Cascade River Road. Lookout Mountain used to be passed by in favor of its grander neighbor Hidden Lake, but these days it seems a little busier than it used to be. This is one of the few lookouts available for first come, first served stays and has incredible views of the North Cascades, Pickets, and the deep cirque of nearby Monogram Lake. History. Lookout Mountain’s first lookout was a 2-story cathedral style cupola built in 1928. The current structure replaced it in 1967 and was one of the last Northwest lookouts built. It is available first come first serve for overnight stays and currently maintained by volunteers. If you do stay the night, always treat these structures with care and leave them better than you found them. Always bring overnight gear for a backup plan if the lookout is full or unavailable. 2022-09-17 07:00