The the flag of Morovis.
|Blas Delgado, Flags of the World (crwflags.com)|
The eagle represents St. John the Evangelist and is a tribute to one of the founders Juan Evangelista. I'm not sure what the bands on the right division represent, other than perhaps the official colors.
I also find the coat of arms of Morovis to be one of the most aesthetically pleasing ones. The coat of arms are usually similar to the flags, in this case the coat of arms of Morovis adds some elements.
|Nelson L. Roman, Flags of the World (crwflags.com)|