Quick Facts
Data Field (Title) | Content | Icon/Note |
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Official Vietnamese Name | Lễ hội Yến Sào | Literally: 'Salanganes Nest Festival'. |
Primary Location | Hòn Nội Island and other locations in Khánh Hòa Province (near Nha Trang). | Home to the largest swiftlet population in Vietnam. |
Traditional Timing | Annually on the 10th day of the 5th Lunar Month (usually in May or June). | Marks the traditional harvest and remembrance day. |
Significance | Honors the founding ancestors and workers of the unique, nearly 700-year-old salanganes (edible bird's) nest industry. | |
Status | The festival and the associated knowledge have been recognized as a National Intangible Cultural Heritage. |
I. Overview: Honoring the Bird Nest Tradition
A Centuries-Old Industry
The Lễ hội Yến Sào is a unique cultural and economic festival that celebrates the ancient and valuable industry of harvesting edible bird’s nests (salanganes nests). For nearly 700 years, the steep cliffs and islands of Khánh Hòa Province, particularly around Nha Trang, have been central to this industry.
The nests—built from the swiftlet’s solidified saliva—are revered across Asia as a medicinal delicacy, often referred to as “white gold.” The festival is a solemn occasion for the community to acknowledge the immense effort and risk involved in gathering this treasure.
A Tribute to the Ancestors
The core purpose of the festival is to honor the ancestors and pioneers who first discovered the swiftlet nests and taught the local people the complex, perilous methods of exploitation and preservation. Chief among them is Lê Văn Đạt, an admiral from the Trần Dynasty (13th-14th centuries), who is traditionally venerated as the founder of the local bird’s nest trade.

II. Festival Activities: Rituals on the Island
The main rituals take place on Hòn Nội Island, a protected swiftlet habitat, emphasizing respect for nature and the industry’s rich history.
1. The Solemn Ceremony (Lễ Cúng Tiền Hiền)
The Rituals: The ceremony is steeped in historical significance, featuring traditional rites performed at the island’s temple dedicated to the industry’s founders and the Holy Mother of the Island.
Recalling History: The ceremony recalls the nearly 700-year history of the salanganes nest production, expressing gratitude for the unique natural resources and the bravery of the workers.
Commendation: The event often includes an award ceremony to honor individuals and organizations who have demonstrated outstanding efforts in developing and protecting the swiftlet population and the industry.
2. Promoting Cultural Heritage
The festival plays a crucial role in preserving the specialized knowledge of the trade, which includes the delicate art of harvesting the nests from high cliffs and the meticulous processing methods. The recognition as a National Intangible Cultural Heritage further highlights this preservation effort.
3. Associated Events
While the core ritual is held on the remote island, related activities often take place in Nha Trang and surrounding areas, particularly during the broader Nha Trang – Khánh Hòa Sea Festival (a biennial event):
Exhibitions: Showcasing the history, products, and craftsmanship associated with the bird’s nest industry.
Cultural Performances: Traditional music and dance that celebrate the maritime culture of Khánh Hòa.

III. Visitor Information
Guide Field | Details |
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Location Note | Access to Hòn Nội Island is highly restricted due to its status as a swiftlet habitat. The main ceremonial events are primarily attended by officials and industry workers. |
Best Way to Experience | The festival is a niche cultural event. Tourists are more likely to enjoy the broader cultural programs and related exhibitions held in Nha Trang City during the corresponding time (usually May or June). |
The Product | This is the perfect time to learn about and sample genuine Khánh Hòa bird's nest products, renowned for their quality and believed health benefits. |
Cultural Connection | The festival is a powerful display of the local community's commitment to both commerce and conservation, emphasizing that the prosperity of the industry relies on the preservation of the swiftlets and their environment. |