Architecture firm HansonLA has unveiled interior renderings for Circa, a $500-million mixed-use development now rising across the street from Staples Center and L.A. Live.

The project, which comes from a team of investors that includes Jamison Services and Hankey Capital, will consist of twin 36-story towers featuring a combined 648 apartments above 40,000 square feet of ground-floor commercial space and parking.

Although the two buildings appear identical from the outside, Hanson has designed their lobbies with contrasting themes based on natural elements.  The north tower features protruding marble forms, modeled after icebergs.  The south tower features softer, undulating shapes inspired by sand dunes.

The residential units above are portrayed with wood flooring and large windows offering skyline views.

Completion of Circa is expected in 2018.

HansonLA is designing several other high-rise projects in Downtown Los Angeles, including Ten50 and City Market in the Fashion District.