Lan Ha Bay is made up of around 300 karst islands and limestone sea rocks and can be found southeast of Cat Ba Island. As a geological extension of Halong Bay, Lan Ha Bay is equally as beautiful although it is less visited, less inhabited and therefore has the extra appeal of being a more peaceful place.
Lan Ha Bay is located in the Gulf of Tonkin, near the city of Haiphong, in the northeastern part of Vietnam.
Lan Ha Bay is over 400 square kilometers in size, making it smaller than its more famous neighbor, Halong Bay.
Lan Ha Bay is known for its stunning natural beauty, with its towering cliffs, pristine beaches, and crystal-clear waters.
Lan Ha Bay is home to a unique ecosystem, including hundreds of species of flora and fauna, and several species of endangered marine life.
Compared to Halong Bay, Lan Ha Bay is less crowded, making it a great option for those seeking a more peaceful and serene experience.
Lan Ha Bay is a great destination for kayaking and biking, with several scenic routes and trails to explore.
There are many eco-friendly accommodations available in Lan Ha Bay, including floating hotels and eco-resorts, which help to preserve the natural environment of the bay.

This isolated paradise is an ideal beach location, with hundreds of undisturbed white sand beaches. While the beaches are fairly small, they are surrounded by towering limestone karsts that give visitors lots of privacy. Whilst relaxing at these tiny beaches visitors may see many butterflies and birds enjoying the many flowers and trees that sit around the edges of the sand. Lan Ha Bay is also a great place to take part in water-based activities such as snorkeling, kayaking or scuba-diving!

One unexpected activity that is possible in Lan Ha Bay is rock climbing! Some cruise operators offer the option to climb some of the ancient limestone karsts that are dotted around the bay, giving visitors the chance to see Lan Ha Bay from a very different perspective. Though it can be physically challenging, it is also extremely satisfying to climb your way to the top.