In Gateway Arch and Wall, the viewer is greeted by a striking architectural scene. The painting features a large archway, surrounded by textured walls that evoke a sense of depth. The color palette consists of warm earth tones, with hints of blue and green that suggest the presence of nature.

Light plays a significant role, highlighting the arch and creating shadows that add to the composition's dynamism. The painting is executed in oil on canvas, a medium that allows for rich textures and vibrant colors. Rusiñol's brushwork is evident, with visible strokes that create a lively surface. The dimensions of the artwork are approximately 80 x 100 cm, making it a medium-sized piece that invites close inspection.

The composition is balanced, drawing the eye toward the arch while maintaining interest in the surrounding walls. Santiago Rusiñol was a prominent figure in the Catalan modernist movement, known for his landscapes and architectural scenes. Gateway Arch and Wall reflects his fascination with structure and light, common themes in his work. An interesting fact about this painting is that it showcases Rusiñol's ability to blend architectural elements with natural surroundings, a hallmark of his style.

This work exemplifies the transition in Rusiñol's career towards more abstract forms in later years.