Yes, such pictures can be used
At least in the US they can be.
17 USC 120 provides that:
(a) Pictorial Representations Permitted.—The copyright in an architectural work that has been constructed does not include the right to prevent the making, distributing, or public display of pictures, paintings, photographs, or other pictorial representations of the work, if the building in which the work is embodied is located in or ordinarily visible from a public place.
The owner of a non-public place could prohibit the taking of photographs, or require a contract not to take photos as part of the price of admission, as many picture galleries and other exhibits do, but could not prohibit the publication of such a picture. The owner might have grounds for a breach of contract action, however.
Many other countries have a legal doctrine of freedom of panorama (FOP). Indeed some have wide protections for FOP than the US does. Others do not protect FOP at all. The Wikipedia article linked above gives a map and detailed per-country information.
If the "landmark" is not a building but a natural feature such as a hill or waterfall, there is no protection for it under the laws of any country that I am aware of. Also if a building is old enough that it is not protected by copyright, there is no protection.