Hon Co Island: A Guide to The "Glass" Island

Hon Co Island is located in the Cong Do region of Bai Tu Long Bay. Commonly referred to as Grass Island, it derives its name from the lush, thick grass that blankets the landscape. As of 2025, Hon Co remains relatively unknown among tourists, preserving its status as a hidden gem within Halong Bay.

Photo: Flickr/davidcjones

With its pristine white sandy beaches and shimmering emerald waters, Hon Co Island is an ideal destination for those seeking refuge from the hustle and bustle. Visitors can immerse themselves in a serene paradise, either by unwinding and swimming or by embarking on a leisurely exploration of the natural surroundings. The island also features the captivating Thien Canh Son Cave, considered a must-visit attraction when exploring the wonders of Halong Bay.