Cat Ba Island is situated about 50 km East of Hai Phong city in the North of Vietnam. Cat Ba Island is part of a chain of 366 islands that lie within the larger area of Halong Bay.

At over 200km2, Cat Ba Island is the largest island in Halong Bay. The island is easily accessible and matches neighbouring Halong Bay and Bai Tu Long Bay for stunning natural beauty.

It also offers visitors the added options of relaxation, adventure and cultural exchange. In April 2005, Cat Ba was officially recognized as Cat Ba Archipelago Biosphere Reserve by UNESCO.
Cat Ba is known for its rugged limestone mountains, hot and cold springs, moist tropical forests, mangrove forest, coral reefs as well as its deserted beaches, and casual island lifestyle.

Cat Ba is now much sought after by both domestic and international visitors as a ready alternative to the city madness and bus tour boredom.