A final vacation as a couple or a calm preparatory period for the soon-to-be-older siblings.
There are many great aspects to a pregnancy vacation. You should, however, pay attention to a few minor details. For example, adventure trips, trips with strong climatic changes and tropical regions are not necessarily recommended. Rather relax in a temperate climate, which you can easily reach by plane, car or train. The second trimester of pregnancy is ideal for this because the physical transformation is complete and the stomach is not yet overly round.
But as always: Before you start, talk to your doctor or midwife about it.