Long-term visa for European countries?
I hold a US passport, will be 62 years old when I make my trip, have no intention of working, and would like to stay a year shared between Spain, Italy, France, and the Netherlands. This clearly won't work with the standard Schengen visa, which restricts me to staying 90 days out of every 180. I want to visit some non-Schengen countries, but none of them call me for a 90 day period.
Does anyone know how to stay a year? What visa I need since I won't be working or going to school? I'll be retired and just want to enjoy a year abroad before I need a walker:~}