Arnold Schwarzenegger's private jet landed at Graz airport Thursday.
The museum is located in the renovated house of his birth in the village of Thal. It chronicles his rise from humble beginnings as a muscular young immigrant to the U.S. to Hollywood action hero to, most recently, California's governor.
The museum has been open since July, but Friday's ceremonies will mark the formal inauguration. Schwarzenegger is expected to unveil a bronze statue of himself.
While also known by his more common nicknames, fans in Schwarzenegger's home province of Styria often call him "The Styrian Oak," in an allusion to that tree's toughness.