Viet Nam has a great variety of man-made wonders ranging from prehistoric monuments, historical cities and towns, fortifications, Buddhist shrines, Hindu temples, to tunnels and tombs. Among them, I am especially impressed by the Complex of Hue Monuments, Hoi An Ancient Town, Thang Long Imperial Citadel, and My Son Sanctuary. It is reported that many of our man-made wonders have been damaged. There are some possible solutions to this. First, the government should limit the number of tourists visiting them every day. Besides, we also should raise money to restore and preserve them. We can hold a campaign to ask for donations from individuals and organizations. In addition, it is also a good idea to put valuable things in high-security places. If many defensive measures are taken, our man-made wonders will be surely protected and preserved.