Dao Titov is a small island in Halong Bay named after the Russian cosmonaut Gherman Titov. President Ho Chi Minh and Gherman Titov visited the island in 1962, with Ho renaming the island in honour of the cosmonaut.

In Vietnamese ha long means ???escending dragon?? and legend has it that Halong Bay was formed by a gigantic dragon which plunged into the Gulf of Tonkin, creating thousands of limestone outcrops by the lashing of its tail. Geologists tend to dismiss this theory, arguing that the myriad islands that dot Halong Bay and extend all the way north to the Chinese frontier are the product of selective erosion of the seabed over millennia.