The Zheng He Memorial Hall commemorates the great Ming-dynasty admiral and explorer who launched seven maritime expeditions from Nanjing in the early 15th century. The museum occupies a building near the site of the original Longjiang Shipyard where Zheng He's treasure fleet was constructed, and covers his voyages, the ships, the trade networks, and the cultural exchanges his expeditions enabled.
The site includes some reconstructed sections of the shipyard and models of the treasure ships. The exhibits are detailed by Chinese museum standards and have good English labelling. Zheng He is an important figure in China's contemporary self-image as a historic maritime power, so the museum has received sustained official support and is well maintained.