Tween Activities in St. Louis
8 tween-approved activities in St. Louis for ages 10–12. From escape rooms to outdoor adventures, things tweens actually want to do.
Highest rated: Monsanto Insectarium, James S. McDonnell Planetarium, Saint Louis Zoo. 2 are free. 7 work for rainy days. Every listing includes stroller access, cost estimates, and parent tips.
Top Picks

Monsanto Insectarium
4.8 starsThe Monsanto Insectarium puts kids face-to-face with some of the world's most spectacular insects and arachnids, giant walking sticks, enormous beetle

James S. McDonnell Planetarium
4.8 starsLying back in the dome theater watching a full-sky projection of the universe is a uniquely powerful experience, kids go quiet in a way they rarely do

Saint Louis Zoo
4.8 starsThe Saint Louis Zoo is consistently ranked among the top 5 zoos in the US, and it's entirely free to enter, a fact that still surprises visitors. Kids

City Museum
4.7 starsCity Museum is basically an adult-sized jungle gym built from salvaged industrial materials, kids go absolutely wild crawling through 10-story caves,

St. Louis Union Station
4.6 starsUnion Station is a beautifully restored 1894 train terminal that's been transformed into an entertainment complex with the aquarium, a giant Ferris wh
FreeMonsanto Insectarium
Ages: 4–17

James S. McDonnell Planetarium
Ages: 5–17
FreeSaint Louis Zoo
Ages: All ages — one of the best free zoos in the country

City Museum
Ages: 5–17 (little kids need supervision on climbing structures)
Partially FreeSt. Louis Union Station
Ages: All ages — something at every stage

St. Louis Aquarium at Union Station
Ages: 2–12

City Jump Family Entertainment Complex
Ages: 3–17
Partially FreeUnion Station
Ages: Best for ages 2-14
Common Questions
- What are the best activities for tweens (ages 10–12) in St. Louis?
- St. Louis has 8 activities rated for tweens (ages 10–12). Top picks: Monsanto Insectarium, James S. McDonnell Planetarium, Saint Louis Zoo, City Museum, St. Louis Union Station.
- Are there free tweens activities in St. Louis?
- Yes — 2 of the 8 tweens-friendly activities in St. Louis are completely free, including Monsanto Insectarium, Saint Louis Zoo.
- What indoor activities are good for tweens (ages 10–12) in St. Louis?
- 7 indoor or rainy-day activities in St. Louis are suitable for tweens (ages 10–12). Best rated: Monsanto Insectarium, James S. McDonnell Planetarium, City Museum.
More Ways to Browse
Free St. Louis Weekend Activity Planner
Get a printable planner with St. Louis activity ideas by age, a packing checklist, and weekly picks in your inbox.
Join 1,000+ parents. No spam, ever.