When composing photos, remember to keep the subject simple. My rule of thumb is one photo, one subject. Define your subject, compose the shot and take the photo. The amateur photographer often doesn’t know this simple rule to effective composition.
If you’re taking a photo of a person, take a photo of that person, not that person and the building they’re standing in front of. You can use the building as a nice backdrop for the person, but the person shouldn’t get lost because you’re photographing two subjects.
Trust that your viewers will understand that your subject is standing in front of something significant. Take photos of that building, separate and apart from the person. Make it the subject of a different photo. Then, you can tell a story using multiple photos that are better composed and more enjoyable to view.