THE BRONX - A new building will give residents and visitors a new way to interact with natural life in the Bronx.

The Bronx River Alliance's River House will put all of the offerings of the Bronx River under one roof.

Architect Gregory Kiss says that once it's complete, the 7,000-square-foot space will be the greenest building in the city.

The project cost $6 million and took over a decade to complete. The alliance will move into it next spring.