Peggy Notebaert Nature Museum

The toddler-right size — small enough to see it all without a meltdown, with a warm butterfly haven in February.

Why you'll go

Real parents pick it over the big museums because it's small and manageable — a 60–90 minute visit, not a marathon. The butterfly haven is warm magic in the dead of winter.

What they'll love

The Hawver and Lacy Families Nature's PlaySpace is the headliner for the smallest set: a 3,050-square-foot play area built for young children (the museum says up to age 7) across six Illinois Great Lakes habitats, where toddlers can push water around at the water tables and climb up to a treehouse before taking the river slide back down. Down on Level 1, Mysteries of the Marsh keeps little ones busy with live turtles, frogs, and snakes, and the Judy Istock Butterfly Haven is a 2,700-square-foot greenhouse with more than 1,000 free-flying butterflies.

Real talk

Open daily 10am–4pm. IL residents free every Thursday ($10 suggested). 2026 change: the Butterfly Haven is now a separate $5 add-on and bans strollers — you carry them in. Infants ≤12 mo always free.

Don't miss

• Start in Nature's PlaySpace before the school groups land The 3,050 sq ft Hawver and Lacy Families Nature's PlaySpace is purpose-built for the youngest guests (the museum says up to age 7), with water tables and a treehouse you climb up to and ride a river slide back down, spread across six Illinois Great Lakes habitats. It's a zone where a young toddler can free-range. Head here first thing at the 10am open; it's the room that fills up fastest with little ones.
• The first-floor marsh for the animal fix Mysteries of the Marsh on Level 1 has live turtles (including Blanding's and spotted turtles and an alligator snapping turtle), frogs, and snakes. It's a quick, high-reward loop when attention spans are short. Pair it with the adjoining RiverWorks water exhibit, but save RiverWorks for last.
• Walk the Judy Istock Butterfly Haven The 2,700 sq ft tropical greenhouse holds more than 1,000 free-flying butterflies and stays warm and bright even on a gray winter day. Strollers are not allowed inside the Butterfly Haven; park the stroller at the entrance and carry the little one in. For non-members it's a $5 add-on to general admission.
• RiverWorks water play — but plan for wet sleeves The RiverWorks hands-on water exhibit lets kids build dams, control turbines, and change the flow of the river, and it's a toddler magnet. Kids tend to get wet no matter what. Do RiverWorks at the very end of your visit and pack a change of clothes; sleeves will get soaked.