In En haut de la Tour, Henri Rivière presents a striking view of a tower, surrounded by a vibrant sky. The colors are rich and varied, with deep blues and warm oranges blending together. The tower itself is depicted with intricate details, showcasing its architectural features.

The overall composition draws the viewer's eye upward, emphasizing the height and majesty of the structure. The painting is executed in oil on canvas, a medium that allows for rich texture and depth. The brushwork is expressive, with visible strokes that add to the dynamic quality of the scene. Rivière's use of light and shadow enhances the three-dimensionality of the tower.

The approximate dimensions of the artwork are 60 x 80 cm, making it a medium-sized piece. Henri Rivière was known for his focus on architectural subjects and landscapes, often blending elements of both. En haut de la Tour reflects his interest in the interplay between nature and man-made structures. An interesting fact about this work is that it captures a moment of transition, where the natural light of the sky interacts with the solid form of the tower.

This piece exemplifies the Symbolism movement, which sought to convey deeper meanings through visual forms.