Is the building copyrighted? Can it be used for photography in business?

The building has exclusive copyright, that is, the exclusive right of appearance. It can not be used as an independent and specific photo content, but it can be used as a business in the landscape. For example, the landscape photos of Beijing, each building only accounts for a small part, and it is a landscape composed of architectural groups, so it can be used. But if you take a photo of the WTO alone, it can't be used for business, and you must get the necessary authorization. Like a person's portrait right.