MIAMI (AP) -- Developers are proposing to build the nation's biggest shopping mall in northwestern Miami-Dade County. The Miami Herald (http://hrld.us/1Go8szP ) reported on Saturday that Canadian company Triple Five wants to develop the mega mall. Triple 5 opened the Mall of America, currently the nation's largest shopping mall, in Minnesota in 1992. The company says the new mall, named American Dream Miami, will be even larger. The $4 billion entertainment and shopping complex will include an artificial ski slope, a lake with submarine rides, Legoland park, water park, sea lion show, indoor gardens and miniature golf course, among other attractions. "It is our intent that this project - American Dream Miami - will exceed our other world famous projects in all respects," Triple Five said in a statement. The 200-acre development is expected to bring 25,000 jobs to the region. The proposed developed still needs various approvals from local officials. Miami-Dade Mayor Carolos Gimenez told the newspaper that the development could provide a major economic boost for the region. "It takes a lot of logistics to keep a thing like that going. All the food, and the mechanical equipment, air-conditioning -- there's going to be a huge spin-off," he said.