Should you happen to be in Budapest with a few hours to spare then it is worth taking a look at the Közlekedési Múzeum Budapest Transport Museum. Set at one corner of City Park it has some interesting exhibits ranging from full size locomotives to model ships.
One of the museum attendants was explaining the portable engine to me and I mentioned it was made in England, “Ah!” he said, “But the horse is Hungarian.”
Some of the larger exhibits including a rather good paddle steamer engine complete with paddles are set in the grounds where there is a small cafe should you be in need of refreshment.
There are many large scale locomotive models in cases which are great to look at but difficult to photograph. There is however no restriction on photography. There are a few working model railway layouts and plenty of interesting railway related items. Most of the information labels are in Hungarian with a few english translations here and there.
A few more photos of mine here – Nautical Ramblings.