The International Rose Test Garden in Washington Park is a bloomin' paradise with over 10,000 rose bushes showing off more than 610 different varieties from late May to October. It's like a rose fashion show where new varieties get their big break before hitting the market. The garden's been around since World War I, when hybrid roses were sent here for safekeeping. With guided tours, volunteer opportunities, and even an ADA-friendly makeover, this park is a must-see for any flower lover or nature enthusiast. While the garden is free to see, you do have to pay for parking.