If you haven't seen it, and it is still open, I would go just to see the things the artist there have created.
I've been to Gulliver's Gate twice. I enjoyed it immensely the 1st time - incredible replication of famous architecture and landmarks around the world plus lots of moving parts including trains - and I couldn't wait to go back and bring my spouse. The 2nd time around many of the trains and mechanical items (e.g. ships, hot air balloons) weren't operational. The regional dioramas were still impressive, but we had to ask the help to get the trains moving and they didn't get them all running at that.
There were very few people at the exhibit both times we went and being so close to Times Square, it did make me wonder how long the exhibit would last. It has to be expensive real estate as evidenced by the $36 admission price.
