Act as a seasoned travel planner with 10+ years of experience in adventure tourism. Research and compile a list of the top 5 global destinations for horseback riding, tailored for [BEGINNER/INTERMEDIATE/ADVANCED] riders. For each location, include: 1) A brief description of the terrain and scenery, 2) Recommended local stables or tour operators with [BUDGET/MID-RANGE/LUXURY] options, and 3) The best [SEASON/MONTH] to visit for optimal riding conditions. Highlight unique cultural or natural experiences riders can enjoy off-trail (e.g., [LOCAL FESTIVALS/WILDLIFE SPOTTING]). Format the list with engaging, traveler-friendly language and practical tips about packing essentials for [CLIMATE TYPE].