The World's Largest Ketchup Bottle is a famous roadside attraction located in Collinsville, Illinois. Standing at 170 feet tall, it was originally built in 1949 as a water tower for the Gardner Denver Company. The structure is designed to resemble a ketchup bottle, making it a unique landmark for travelers. In 1995, the bottle was added to the National Register of Historic Places due to its cultural significance. Today, it serves as a symbol of the town and attracts visitors who are curious about its quirky design and history. The bottle is often featured in local events and promotions.