Kids visit the Biltmore House in Asheville free all summer! Children 16 and younger are admitted free with a paying adult from May 28–September 6. If you are planning to go to the Biltmore anyway - this is a great deal!
Additional savings from the website:
Buy tickets online and save $10 off regular adult daytime admission on Sunday through Friday visits in June. Save $5 on all other days this summer.