Calvin University’s Preserve is Getting a Massive New Rock Garden

Back when I attended Calvin University in Grand Rapids in the early 2000s, I barley had an idea this hidden gem existed. Sure, my dorm floor and I may have taken a single group photo at the Calvin Ecosystem Preserve & Native Gardens—but that was the extent of my exploring. I can only imagine how much it has grown since then!

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Now, the preserve—over 100 acres of trails, ponds, and native habitats—is adding a stunning new feature: a rock garden at its western gateway. The garden will showcase Michigan’s diverse geology, including a 16,000-pound puddingstone centerpiece. The interactive display will serve as a teaching space for geology students and a gathering place for the community. At the end of last month, Calvin shared that work on the garden is continuing to progress:

Thelma Venema, whose lifelong passion for rocks inspired the project, is generously supporting it. Here's a rendering of what the finished space will look like:

The wildlife sanctuary itself is open to the public and free! Trails wind through woods and along ponds, perfect for spotting wildlife or simply enjoying the quiet. Signs along the paths encourage mindfulness exercises, helping visitors connect with the natural surroundings.

The Bunker Interpretive Center hosts interactive exhibits and live animals, while programs like Saplings for kids, stewardship workdays, and greenhouse activities give the community hands-on ways to learn and care for the ecosystem. Visitors can stroll the Venema Plaza and native gardens or join classes and events year-round—there’s really no wrong way to explore.

Follow Calvin Ecosystem Preserve on Facebook for updates on the new rock garden!