I'd love a turtle, saw loads in Barcelona! I also want a panther, which is apparently worrying, but it would be cool if it was (slightly) tame, and you could ask it to kill and eat people. Pelicans, ninja anteaters, turtles and panthers are in my pet 'dream garage'.
Mine is a red eared slider, native to North America. It's a "water turtle", not a tortoise. You're going to need a good setup for a "water turtle".