Superboy used his parents' farm as his first base of operations during his teen years. In order to protect his secret identity, he built a secret tunnel leading from the house to the woods surrounding the town. When his fathers died, eighteen-year-old Clark Kent hired Douglas Parker as caretaker and left the town, although he returned every year to visit Jonathan and Martha's graves.
The Kent family farm remained in the Kent family for several generations.
Several years ago, the super-villain known as Conduit learned of Clark's dual identity as Superman and attacked the Kents in order to get to him. He destroyed the farm forcing Jonathan and Martha Kent to live on the road for several months in a recreational vehicle. 
The Kents eventually returned to Smallville and rebuilt their home.
Past and Present