Happy last summer, my parents let me visit Trang An - Ninh Binh eco-tourism area. Here, the nature is as beautiful as an embroidered picture with charming mountain views. This relic was discovered a few years ago and quickly became an attractive tourist destination. There are many water caves here, visitors can go on the road and can go on the river. When entering the cave, the feeling of mystery and excitement is wonderful. The hanging window is small, but the robes can come in. Inside, long stalactites sparkle on the partitions, creating a vivid wonder. The caves also have very unique names, such as Tran cave, Nau wine cave, Ba Giot cave... the largest is Tran cave. We connect back to each other and can long to near twenty kilometers. Coming here to visit, no one is impressed and want to come back again and again to mingle with the wonderful natural space.