If you like me loved the early Rollercoaster Tycoon then you're in luck. It might not be what you think though. Unfortunatley, Rollercoaster Tycoon World is still a shit show and doesn't seem like it will be better anytime soon (bet let's keep on hoping it will turn out great). The game I just stumbled across and ended up downloading after one screenshot was Parkitect and you totally should do the same.
I've played 15 hours in two days and boy do I want to get back into the game. It's basically like the old Rollercoaster Tycoon games with a wierd SimGolf wibe. You can really build some spectacular things that might not even seem possible at first glance.
Keep in mind that the game is in early access and while it works just fine - it seems a little bit harsh on your PC. I loaded up a map and the my four year old PC really struggled to handle the game. Just watch the trailer, you'll be falling in love in a couple of seconds.