Boerne is about 20 miles NW of San Antonio off IH 10 W. The Visitors Center is located in the southern corner of the Wal-Mart parking lot at 1407 S. Main. From San Antonio take exit 542 and it will be on the right. From Hwy 46 E, turn left on Main until you reach the Wal-Mart. From Hwy 46 W, go right on Main it is about 2 blocks down on the left.
Click here for a map to the Visitor Center.