Wood is one of the oldest building materials still in use, with evidence indicating that dwellings erected over 10,000 years ago employed timber as a key source of construction materials. Wood is still utilized to build both simple structures like log cabins and grand ones like Chinese temples. In Europe, buildings made from wood are believed to have first been constructed about 3000 B.C., but the most famous example is probably Stonehenge. It's a monument set apart for important dates in the ancient calendar, which some people believe was built by aliens because no human beings were around at the time it was created. After the fall of the Roman Empire in A.D. 400, usage of wood in construction declined greatly until the early 13th century when buildings started being constructed again. At this time, new technologies such as concrete and steel were becoming available and they're still used today instead of wood. However, there are still many buildings all over the world made from wood. You just have to know where to look! In conclusion, wood has been used for thousands of years as a key source material for constructing houses and other types of buildings.