Shooting at dusk almost always creates beautiful images.
It is a super beautiful light just before the sun goes down. Its often called Golden Hour, I am guessing because it actually gives everything it touches a golden tint.
There is also a beautiful light just after sunset called the Blue Hour. It occurs about 15 minutes after the sun has set and lasts for about 30 minutes, so it is not very long.
Therefore, when you want to take photos on these occasions, it is important to be present when these different lights are occurring. Therefore, it is good to look around a few days before hand in the same place to look for the best location, I usually call it, location scouting.