Recently, I have been having strange dreams. The other day, I dreamt about traveling in train and it getting late to the destination...I don't know what the destination was and where it was taking me....but the ride was quite un-comfortable. And the other one I had was celebrating with my friends in a resort.....now do the two link together....???
Traveling on a train can symbolize you being on your life's path. Getting late to the destination could be a symbol of impatience on your journey - the train is in control and you would like it to get there quicker.
Perhaps "patience" is the lesson?
There are many dreams that go un-noticed as we don't know what they try to say. I too keep on having dreams ...and that too weird ones....and I am glad that my friend suggested a dream dictionary (http://dreamfortunetelling.com) that has answers to the different dreams. Its really a good place to get meanings to your dream and can you also analyze the dreams.
I also had a dream like the train one. It was just as you explained it, my train was outside a castle, does that mean anything?