Justin Chambers @ Knott's Berry Farm

Grey’s Anatomy star Justin Chambers, aka Dr. Alex Karev, and his wife Keisha start off the new year at the Knott’s Berry Farm amusement park in Buena Park, Calif. on Wednesday.

The Chambers brought along their five children – Isabella, 12, fraternal twins Maya and Kaila, 10, Eva, 8, and Jackson, 6.

JACKSON. IS. SO. CUTE.

Grey’s returns with one all-new episode (“Lay Your Hands On Me”) on Thursday, Jan 10. It’s the last one completed before the writers’ strike.

More pictures inside of Justin Chambers, 37, at Knott’s Berry Farm…