Lang Son truly offers a wealth of attractions for travelers to discover and explore. One of the standout highlights is the historic Citadel, a magnificent Chinese fortress that unveils the city's intriguing past. As you wander through the ancient walls, you'll stumble upon cultural treasures like an age-old temple, immersing yourself in the rich heritage. Don't forget to visit the awe-inspiring Tam Thanh Cave, a natural marvel boasting millions of years of history. Inside, you'll be captivated by the breathtaking stalactites, stalagmites, and the mystical underground river. The vibrant markets of Lang Son are a paradise for shopaholics, offering an incredible variety of goods, from exquisite traditional handicrafts to luxurious items. And when the sun sets, the city comes alive with its vibrant nightlife scene. Make sure to visit Night Market Ky Lua, where you can indulge in delectable, mouthwatering snacks and street food. To truly experience the essence of Lang Son, don't pass up the chance to tantalize your taste buds with the irresistible flavors of the locally renowned banh mi thit, pho bo, and cao lau.