Trong Mai Islet is situated on the southwest side of Halong Bay, 5km from Bai Chay Wharf near Dinh Huong Islet. This twin islet has become the iconic symbol of not only Halong Bay but also of Vietnam.
The islet appear with two 10-m high limestone rocks with shapes like a pair of Cock (Trong) and Hen (Mai) has inspired the works of many artists on photography, painting, and poetry to exploit and describe the beauty of whole bay. The chickens' tiny legs support their heavy bodies, and it appears that one strong wave could throw the two stone blocks into the sea. However, hundreds of millions of years have passed, and the Trong Mai is still there.
This islet is so iconic that it has been chosen to be the logo of Viet Nam Tourism since 2000.