1. The Chicago River is a system of rivers and canals in Chicago that flows for 156 miles (251 kilometers) through the city. It is an engineering marvel as it was reversed in the early 20th century to send the city’s sewage away from Lake Michigan and towards the Mississippi River. The river is known for its distinctive green color that is achieved by adding dye during the annual St. Patrick’s Day celebration. There are many architectural tours available that showcase the city’s iconic buildings and skyline from the river.

2. The river is accessible 24/7, but the architecture tours usually operate from 9 am to 9 pm. Different tours have different schedules, and it’s best to check with the tour company for details. Shoreline Sightseeing Company (phone: 312-222-9328) and Wendella Sightseeing Boats (phone: 312-337-1446) are two popular tour companies.

3. Ticket prices for architecture tours vary depending on the company and the type of tour. Prices generally range from $35 to $60 per person. Both Shoreline Sightseeing Company and Wendella Sightseeing Boats offer online ticket booking. The river can be accessed by public transportation such as buses and trains. Downtown Chicago is also easily navigable by foot or bike.