S ustainable travel is on the rise , and Baltimore has become an ideal environmentally friendly destination , thanks in part to the persistent and imaginative efforts of the six local leaders and organizations profiled in the following pages . Their long-term efforts have contributed to a healthier Baltimore Harbor , sustainabilityconscious cultural and educational institutions , and an abundance of city-wide activities that celebrate the environment . Find out how you can support that mission and plan an eco-friendly trip to Baltimore .