>>3288174There are a few things you can do. I took this one from the middle observation desk on that Tokyo Tower in your image.
The window reflections can be mitigated by
1. being careful with your position, trying different angles, having your lens be as straight against the glass as possible
2. putting your jacket or some object around the edges of your lens so the reflections are blacked out and don't appear
you'll get less blur by
1. having a camera that can take in enough light to shoot at a fast speed (wide aperture, full frame sensor, able to shoot at high ISO without as much noise)
2. being able to set the camera on a mini tripod or resting on a shelf of some sort
I had plenty of blurred or unusable shots, but this is one of the best I could get. The camera was resting on a chest-high ledge and it was more or less straight against the glass. This was at the lowest ISO of 100 because it was an eight second exposure
I got this on a basic 600d with a kit 18-55 and kit zoom (80mm). Also post processing is important but that's another subject
keep trying
