Keangnam Hanoi Landmark Tower

It is the second tallest building in Vietnam. 350 meters long and has 72 floors. It is a complex building with everything from offices, residential hotels, Intercontinental hotels, shops, cinemas, hospitals, restaurants, banks, and gyms. There are 3 buildings in total. There is also an observation deck. If you stay at the InterContinental Hotel in the building, you don't need to go to the observatory.