One of the island's top attractions is Cat Ba National Park, a UNESCO Biosphere Reserve that covers nearly half of the island. Home to diverse wildlife, including the rare Cat Ba langur, the park features dense jungles, limestone peaks, and scenic hiking trails. The most popular trek leads to Ngu Lam Peak, offering panoramic views of the surrounding landscape.
For those interested in history, Hospital Cave is a fascinating wartime relic that served as a secret hospital and bomb shelter during the Vietnam War. Hidden inside a limestone mountain, this three-story structure is an intriguing glimpse into Vietnam’s past.
Lan Ha Bay, located just south of Ha Long Bay, is a must-visit for its breathtaking scenery and crystal-clear waters. Less crowded than its famous neighbor, Lan Ha Bay offers towering limestone karsts, hidden beaches, and floating fishing villages, making it a stunning alternative to Ha Long Bay's busier areas.
Cat Ba's beaches are another major draw, with Cat Co 1, 2, and 3 being the most popular. These small, sandy coves are perfect for swimming, sunbathing, and enjoying the coastal scenery. The best time to visit is early morning or late afternoon when the beaches are less crowded.
One of the most popular activities on Cat Ba is taking a boat tour through Lan Ha Bay. These tours often include kayaking through hidden lagoons, exploring sea caves, and visiting floating fishing villages. Many tours also stop at Monkey Island, where visitors can hike to a viewpoint overlooking the bay.
For outdoor enthusiasts, rock climbing is a thrilling way to experience Cat Ba's dramatic limestone cliffs. Companies like Asia Outdoors offer guided climbs for all skill levels, with routes available on the island and in Lan Ha Bay.
Kayaking is another fantastic way to explore the island’s waters. Paddling through the tranquil waters of Lan Ha Bay allows visitors to get up close to towering karsts, secluded beaches, and hidden caves that larger boats cannot reach.
Cycling through the island's scenic countryside is a great way to explore Cat Ba's interior. The ride from Cat Ba Town to Viet Hai Village, a small traditional village nestled within the national park, is a particularly popular route.