Procession of the Magi in the Palazzo Medici Riccardi in Florence (1459-60)
Benozzo Gozzoli 

Cosimo de' Medici chose Benozzo Gozzoli to decorate the chapel, and this commission brought the artist back to Florence. The pictorial program of the chapel is also structured in two parts: the Procession of the Magi in the main room and the Adoration of the Child in the chancel with the Angels worshiping on the side walls.

There is an incredible amount of detail in this for people, and animals.

The Journey of the Magi
This is not one piece specifically, but rather a search category in itself. Often it seems that the journey is made from horseback and the artist at the time did what they know.

The Journey of the Magi : Sassetta

The Journey of the Magi: Sassetta (Stefano di Giovanni) (Italian, Siena or Cortona ca. 1400–1450 Siena)

Below are two images from a site doing picture details of Wall Painting restorations.That direct link is here: https://camera.hypotheses.org/tag/wall-painting

The Journey of the Magi, detail, wall painting, 1435, Maria Saal (Carinthia), Cathedral

The Journey of the Magi, detail, wall painting, c. 1420/25, St. Peter am Kammersberg (Styria), Parish Church