Is it illegal to make foreign cultural buildings when making 3D games?

Real images of foreign cultural buildings, such as photos and videos (except professional photography), do not constitute infringement, and these are state property, and no one will sue you. However, once you model these cultural buildings, you abstract the real and concrete things, and this becomes a work. If you can guarantee that your style is unique, then you not only have no infringement, but also have the copyright of your work. If, unfortunately, your modeling is exactly the same or basically the same as the works created by others, then you will face the risk of infringement in law.

However, at present, the tort liability in the field of intellectual property rights is not very heavy, and the cost of safeguarding rights is quite high, so not many people like you who have just entered the industry will take care of you because it is not worth it. This is also an important reason for the proliferation of infringing works in China. If you reach a certain scale, then you should be careful, because you have a considerable economic foundation and your responsibility will be enhanced. Because of this, the enthusiasm of others to pay attention to you and attack you will be greatly stimulated.

I hope the answer will help you, and I hope you can give me some encouragement.