Oceania

Entering the southern most continent from South America, guests would pass through a Polynesian village, where a Tailspin attraction might fit in well, or perhaps something themed to Moana, like the new walk through attraction at Epcot.  

 

This region should also feature a major thrill ride, most likely a roller coaster through a volcano, which could act as the main "weenie" of the park.   

To the east of Polynesia would be an area themed to Australia, which could have something based on The Rescuers Down Under. A building designed to look like the Sidney Opera House could hold a simulator ride that allows guests to "fly" over places in Australia like Ayers Rock, the Great Barrier Reef, and the Blue Mountains.  This attraction could use Soarin's ride system or it could be more like DisneySea's Stormrider or the new Pandora ride at Animal Kingdom.  A replica of the Harbor Bridge could connect Oceania to Africa.  An attraction based on Finding Nemo would be a natural for this location as well. 

To the far south of Oceania could be an Antarctica themed attraction, or, more likely, Antarctica could be represented by a diorama on the train.