The Chicago Bears have unveiled a nearly $5 billion proposal for an enclosed stadium next door to their current home at Soldier Field as part of a major project that would transform the city's lakefront.

The plan calls for $3.2 billion for the new stadium plus an additional $1.5 billion in infrastructure.

The team and the city said the project would add green and open space while improving access to the city's Museum Campus and also could include a publicly owned hotel.

"This is not an easy project, but Chicago doesn't like it easy," Bears president Kevin Warren said.

The team said last month it was prepared to provide more than $2 billion in funding toward a publicly owned stadium in the city.