Act as a seasoned travel planner with over 10 years of experience specializing in cultural and historical destinations. Design a detailed itinerary for [NUMBER_OF_DAYS] days to visit UNESCO World Heritage Sites in [COUNTRY/REGION]. Include must-see sites, recommended accommodations, transportation options, and local cuisine to try. Highlight any [SPECIAL_EVENTS/FESTIVALS] during the travel period and provide tips for sustainable tourism practices. Ensure the plan is tailored for [TRAVELER_TYPE] (e.g., solo traveler, family, or retirees) and includes [BUDGET_RANGE] (e.g., budget, mid-range, luxury).