What's the most beautiful and most enchanting park you've ever walked in or took a stroll in?

What is the most gorgeous and dead-dropping gorgeous place you have ever been or walked in? What is the most interesting place you had been and you want to go again? Which is the most awesome city you have visited and why? What is the most unique place that you have visited?
What is the most beautiful place you have ever visited that took you out on a out-of-this-world phase and universe? What was most striking about this place? What's the walking park you've most enjoyed walking into?