Reflection Beijing taken by Hao Wu
Architectural photographs of tall buildings often need to be taken when you are fairly close to them, so how can you avoid converging verticals?
To reduce the effect, move back as far as possible, particularly when using a wide angle lens. Preferably move further back and use a telephoto lens. Try not to tilt your camera. If budget permits and you are shooting architecture on a regular basis, invest in a tilt shift lens, which can correct perspective in camera.
Alternatively, see if you can find a higher viewpoint to shoot from, maybe the top of a building or a multi-storey car park. You can also straighten your verticals afterwards with photo editing software.