A property in Vietnam, where I'd grow all manner of herbs and hot things, near Hoi An. Because it's beautiful, the people are amazing and it's central-ish.
If you could build anything you wanted, with no financial, resourcing, time or technological restrictions (i.e. you have a crew of the greatest minds in history and 'future history' to help, the best engineers, can use tech that doesn't exist, isn't viable et al), what would you build?