We visited the East Tennessee Discovery Center two years ago during the TVA&I Fair. It is a nice place to spend a hot or rainy day. They offer birthday parties (link) and summer camps (link). The East Tennessee Discovery Center walk-in admission is $4 for adults, $3 Children ages 5 & up/Senior Adults, $2 Chidren ages 3 & 4, and – Children 2 years old and under are admitted free.
Take I-40W to exit 392A (Rutledge Pk) – follow signs to Zoo.
After entering Chilhowee park, bear L through lower Zoo parking
lot, then take road to R of lake.
Take I-40E to exit 390 (Cherry St). Turn R on Cherry St., go to 2nd traffic light (Magnolia Ave). Turn L on Magnolia, go to 2nd traffic light (Beaman St). Turn L on Beaman, then at crest of hill, turn R into gates of Chilhowee Park, Discovery Center is on left at bottom of parking area.open.
Monday – Friday: 9am – 5pm Saturday: 10am – 5pm They are closed on major holidays and for certain events held at Chilhowee Park, so you may want to call ahead and be sure they are open.