How to visit a friend’s Park?

To visit your friend’s Dino Park, go to the leftmost screen (BATTLE ARENA) and tap on the “RANKINGS” icon (the golden goblet). Select the “FRIENDS” tab and select the friend you want to visit. From the window that popped up, select the “VISIT” option.

Please note that the state of your friend’s Park may be a bit behind their current progress, due to the synchronization delay.