Socialism is an economic tool. National Parks are socialistic. As are police departments, fire departments, and the military. All are supported and ran by the government. Our Interstate System is a creation of socialism.
I don't agree that's what socialism is. Those parks are funded by the private sector, capitalism, not state ownership. The state doesn't create any wealth, it doesn't fund jack shit, that's the people's money. The people fund the state, that's capitalism.
Your ignorance as to the definition of socialism doesn't alter the definition.
National Parks, police, fire depts, etc are all socialist by definition. Parks used to belong only to the wealthy, police forces were there to protect the wealthy from the rabble, the military was there to do the bidding of the wealthy.
Today We the People have formed a society where we have our own socialized parks, police, fire and military for our mutual benefit.
You might not understand this concept but it is socialism by it's very nature.