Is the work of an architectural engineer in a company that builds hotels and tourist ships permissible (halal) or forbidden (haram), especially if he is asked for illogical designs such as transparent bathroom doors?

Your husband is not permitted to work in the design of hotels and tourist establishments that are surrounded by violations of Islamic law, such as the sale of intoxicants and the commission of indecencies, even if he is not responsible for their management. His salary would be unlawful (haram). This is based on the Almighty's saying: "And cooperate not in sin and aggression." And whoever gives up something for the sake of Allah, Allah will compensate him with something better than it.