Illinois grew a living museum with 100,000 plants, and it’s open every day of the year: As the story develops

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It’s more than a park

About 25 miles west of Chicago, in Lisle, Illinois, a 1,700-acre spread of woodlands, prairies, lakes, and gardens grows right off the interstate. The Morton Arboretum holds more than 100,000 living specimens across 4,000 different kinds of plants, and every single one is part of a curated collection. This is not a city park with a few labeled oaks. It is an outdoor museum where the exhibits are alive, and they change with every season. The place stays open 365 days a year, and the reasons to go shift with every visit. Wikimedia Commons

The Morton Salt founder planted all of this

Joy Morton made his fortune selling salt. He spent it planting trees. The man behind Morton Salt founded this arboretum in 1922 on his country estate, a property he called Thornhill. His father, J. Sterling Morton, started Arbor Day, and the family motto was simple: “Plant Trees.”

When Joy died in 1934, the grounds covered about 735 acres. Since then, the arboretum has grown into a global center for tree research and conservation. Shutterstock

Sixteen miles of trails cut through four landscapes

More than 16 miles of walking and hiking trails wind through the grounds, and each parking lot connects to a different path. You can start near the Visitor Center on paved, easy routes or head deeper into woodlands, wetlands, and restored prairie. If you prefer to stay in your car, nine miles of paved roads loop through the property. The scenery shifts fast. One minute you are under a canopy of oaks, and the next you are walking through open grassland. Wikimedia Commons/Patrick Pelletier

Kids climb a giant acorn in a four-acre playground

The Children’s Garden covers four acres of outdoor play space built around real tree science. Kids splash through hidden streams, climb a giant acorn, and slide down oversized tree roots. The whole place is designed for children from toddlers up to age 12, so the little ones have room to explore without getting lost in the shuffle. Every feature ties back to how trees grow, and the kids pick up the science without even noticing. Shutterstock

A living maze hides a sycamore at the center

Right across from the Children’s Garden, the Maze Garden waits. It is a living puzzle made of green shrubs, and if you work your way to the center, you will find a great sycamore tree and a 12-foot-high lookout platform.

From up there, you can see the full layout of the maze below. A smaller toddler maze sits nearby for little ones who want their own challenge without the dead ends. Shutterstock

Hop the Acorn Express for a one-hour tram tour

The Acorn Express rolls through woodlands, wetlands, and prairies on a guided one-hour tour. Naturalists ride along and narrate the whole trip, pointing out species and sharing the history of the grounds. The tram is wheelchair accessible, so nobody has to sit this one out. Tours run daily from mid-April through mid-November, weather permitting. It is one of the easiest ways to cover a lot of ground without wearing out your shoes. Wikimedia Commons/David Jakes

A 24-foot deer stands in the woods

Five larger-than-life animal sculptures now live among the trees as part of the Vivid Creatures exhibit. You will find a white-tailed deer, a sandhill crane, a fox squirrel, a dragonfly, and a snail, all built at a scale that makes you feel small. The tallest piece stands about 24 feet high. Every animal in the collection is native to the Illinois region, and the show runs through spring 2027. It is free with admission. Shutterstock

Recycled steel sculptures built to survive Midwest winters

Portland artists Heather BeGaetz and Fez BeGaetz created the Vivid Creatures pieces from recycled steel and cement, built tough enough to handle Midwest weather. Four of the sculptures sit along an easy paved walkway near the Visitor Center. The snail perches on a berm visible from Interstate 88, so you might spot it before you even pull into the parking lot. Each animal tells a story about how creatures and plants depend on one another. Shutterstock

Thousands of trees turn gold, red, and purple every fall

With thousands of tree types packed into 1,700 acres, fall here is not just a color change. It is a full show of gold, red, purple, and orange that rolls through the grounds over weeks. The Fall Color Festival brings themed weekend events, and you can grab apple cider doughnuts and hot cider while you walk. A weekly Fall Color Report helps you time your visit so you hit the peak. Autumn draws some of the biggest crowds of the year. Flickr/H.

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Michael Miley

Winter lights glow across 50 acres after dark

Once the leaves drop, the trees become the canvas for Illumination, a winter light show that covers 50 acres. You walk a one-mile paved path lined with music and light displays, and the trees themselves glow in bright colors overhead. Four of the Vivid Creatures sculptures join the winter show, lit up against the dark. The event has earned a reputation as one of the best botanical garden light shows in the country. Shutterstock

Quiet prairies and a lake for doing nothing

The Schulenberg Prairie is a restored slice of old Illinois grassland, the kind of open landscape that covered this region before cities moved in. Meadow Lake sits near the Visitor Center with easy paths around it, and birdwatchers can spot many species across the varied habitats. Quiet nature play spaces give children room to explore through simple, unstructured play. If you just want to sit with a sandwich and watch the water, there are plenty of spots for that too. Shutterstock

A rare book library sits steps from the trees

The Sterling Morton Library holds rare books, archives, and art just a short walk from the Visitor Center. Behind the scenes, the arboretum runs a Center for Tree Science dedicated to research, and a global organization has named it a center for studying tree survival. The plant collections here do more than look good. They help protect tree species around the world, making every walk through the grounds part of something bigger than a day trip. Shutterstock

Visit the Morton Arboretum in Lisle, Illinois

You can find the Morton Arboretum at 4100 Illinois Route 53 in Lisle, Illinois, right off Interstate 88. Parking is free. The grounds stay open 365 days a year, with general admission running from 9 a.m. to sunset. Members get early access from 7 to 9 a.m. General admission uses variable plan-ahead pricing, so check the official website before you go. Members get in free. Give yourself at least half a day to cover the highlights. This article was created with AI assistance and human editing. Read more from this brand:

North of Waco, real mammoth bones still lie exactly where they died

America’s only woodland garden on water sits on a lake peninsula in Arkansas

This Lake Huron roadside stop hides 25 hand-built dinosaurs in the woods

The post Illinois grew a living museum with 100,000 plants, and it’s open every day of the year appeared first on When In Your State.