Free Bike Tours Lisbon offers guided tours that are one of the most popular ways to discover the city. Cycling is joyful, safe, eco-friendly and healthy! The concept of β€œfree” means that in their free tours you only pay what you feel appropriate and the amount you can offer. Their tours are eco-friendly and help save CO2 emissions. They offer a fun, relaxing and unforgettable way to explore some of the most beautiful spots in Lisbon with a local guide.