If you are staying downtown and do not want to drive, this is a full day without a car.
Open with the Public Museum. Three floors on the east bank. Streets of Old Grand Rapids rebuilds a block of the 1890s at three-quarter size, so adults stoop and children fit, and it gained an upper storey in 2026. The restored 1928 Spillman carousel turns beside the water to a Wurlitzer. The Roger B. Chaffee Planetarium carries the name of the astronaut this city raised and lost aboard Apollo 1. Planetarium shows run to a timetable, so check it when you buy the ticket rather than at the end. Two to three hours.
Lunch at the Downtown Market, which opened in 2013 and was the first public market in the country certified LEED Gold. Around twenty merchants under one roof, all of it indoors.
Afternoon at the Grand Rapids Art Museum, the world's first LEED Gold art museum, ninety minutes to two hours, and the building itself is worth the attention.
If you still have energy, cross a pedestrian bridge to the Ford Presidential Museum. Two hours there is a stretch for one day, so treat it as tomorrow's plan.
Move between them on the free DASH shuttle rather than walking in the rain. Frequency varies by day, so check the current timetable.