Leonardo DiCaprio is looking for artwork to hang in his new eco-friendly apartment.

The actor wandered into Adam Lindemann’s Madison Avenue gallery Venus Over Manhattan on Tuesday just before guests began arriving for a party there to celebrate Katie Couric and Laurie David’s documentary, “Fed Up.”

Spies said that Leo — who was with girlfriend Toni Garrn — had visited the gallery daily for 10 days straight to admire an exhibition of surfer paintings by punk icon-turned-top artist Raymond Pettibon.

“He’s been there in the middle of the day, strolling around looking at the art,” said a spy of Leo. “He’ll point something out and Toni’s just like, ‘Uh-huh, that’s nice.’ ”

Page Six revealed this week that Leo just snapped up a $10 million Greenwich Village apartment in the health-focused Delos building as part of his burgeoning property empire, which includes two apartments in Battery Park.

Guests later arriving at the gallery from a MoMA and Aloha screening of director Stephanie Soechtig’s doc about America’s food supply and obesity included Michael Bloomberg, Savannah Guthrie, Martha Stewart, Liv Tyler and Claire Danes.

Some guests were said to be trying the film’s “Fed Up Challenge” by going sugar-free for 10 days starting May 12.

And as further eye candy for Leo, Pettibon painted an original mural on a wall of Lindemann’s gallery that’s said to be worth $1 million.