Sure, let's discuss some wonders of Vietnam that I know. One of the most famous wonders is Ha Long Bay. It is a UNESCO World Heritage Site and known for its stunning limestone karsts and emerald waters. The bay is dotted with around 1,600 islands and islets, creating a breathtaking landscape.

Another wonder is the ancient town of Hoi An. It is a well-preserved trading port from the 15th to the 19th century and showcases a unique blend of Vietnamese, Chinese, and Japanese architecture. The town is famous for its colorful lanterns, narrow streets, and beautiful riverside views.

I also find the Mekong Delta fascinating. It is a vast maze of rivers, swamps, and islands, and is often referred to as the "rice bowl" of Vietnam. The region is known for its floating markets, lush green rice paddies, and traditional villages.

Lastly, the Phong Nha-Ke Bang National Park is worth mentioning. It is home to the largest cave system in the world, including the famous Son Doong Cave. The park offers stunning landscapes, underground rivers, and unique biodiversity.

These are just a few wonders of Vietnam that I know of. Is there any particular wonder that interests you?