Mirlo Gate Lodge Tower and its mail box tower.
I wish I could visit inside sometime.
"The 'Stone Tower' was bt by the Palos Verdes Homes Association in 1926 from the plans of the architect Clarence E. Howard submitted in Nov. 1925. Intended for a gated entrance located on Parkland, it was deeded to Palos Verdes Estates in 1939 and has been occupied by various tenants to maintain and preserve the tower." - RPV Historical Society plaque