Editor’s Note: Monthly Ticket is a CNN Travel series that spotlights some of the most fascinating topics in the travel world. In February, we’re exploring the people, places and journeys working to make tourism more sustainable. CNN  —  Bicycles can be a great way for travelers to enjoy a city. Not only do you have easy access to many tourist spots, but they’re good for your personal health, financial health and the planet’s health. However, not all cities are bicycle friendly. The last thing you want is a stressful vacation pedaling around an urban tangle where roads and vehicles totally rule. The good news is some cities have given bicycles…