Act as a sustainable travel expert with 10+ years of experience in eco-friendly tourism. Provide a detailed guide on the best ways to travel sustainably, tailored for [DESTINATION] and focusing on [BUDGET RANGE] and [TRAVEL STYLE]. Include recommendations for low-impact transportation (e.g., trains, bikes), eco-certified accommodations, and responsible activities that support local communities. Highlight [SPECIFIC SUSTAINABILITY GOAL], such as reducing carbon footprint or preserving cultural heritage. Offer practical tips like packing light, using reusable items, and choosing seasonal/local experiences. Format the response in clear sections with actionable steps.