Gulliver's Gate or Miniature World - Model Railroader Magazine

I did see the exhibition several years ago when it was in Manhattan.  I enjoyed it, but it was not yet complete and ran into financial difficulties with a large rental cost for its location.  My guess is that is was very expensive to continue running, and needed a less expensive venue.

I am glad to see it get a second chance.

The continents were each built independently overseas.  Each one has a simple HO scale looping railroad with an appropriate paint job going around it.  As far as I know, the continents are not connected by rail behind the scenes.

One thing bothered me when I visited.  A few of the "international" railways had either a Rio Grande or Canadian National boxcar on them.  I finally made contact with the "train guy" who explained that they were Walthers track cleaning cars, but hadn't been re-badged yet.  He then gave me a personal tour, which we both enjoyed immensely.

They had a large 3D printing operation for their own models.  I believe they did all their own aircraft.