I want to live luxurious in Spain......How much will it cost???

I am a entrepreneur here in the US........make mid 6 figures............but I am only 26......so i have not made retirement status yet...I looked at some places to move to and thought spain is a very beautiful country......and I think I want to retire there.....probably around the coast like Barcelona or maybe Valencia...just somewhere nice....I want a Big house a couple nice cars.....etc......So what would be retirement staus to live in Spain???