Ghastport
A ghastport or airport is a parking spot for happy ghasts, so that they don't roam the entire city that a player wishes to land in. The idea came about with the Nguhcraft Vasanta[disputed], as this was the same update that added happy ghasts.
Several Nguhcraft locations have a ghastport, or plans to make one.
Design notes
A happy ghast will be locked in place if it is encased on five sides in a box. The happy ghast itself has a footprint of 4x5 blocks and it is 4 blocks tall, so a ghast cubby must be 6 by 7 on the ground, and 6 blocks tall. Not every block in the cage needs to be filled - as long as there are no holes larger than 4x4x4, the happy ghast will remain locked.
It is preferred for ghast cubbies to face south or north, as happy ghasts have strange behavior wherein they tend to stay facing south if they are locked in place.