Poptropica Towers is the area in the far left of the island.
It was a name thought up by Jeff Kinney and the creators of the concept, with the vague connotation of a "tropical" island setting.
After you have to capture Nessie, The New Jersey Devil, and The Chupacabra, then Mews will tell you where to catch it, which is the Pacific Northwest. You will get there and chase Big foot back to...
Poptropica's second island was Shark Tooth Island.
go on you blimp to fly to another island and early poptropica has the name at the bottom and the picture is like a pilgram and a water tower!