In Church, Brussels, the viewer is presented with a striking depiction of a church set against a muted sky. The colors are soft, with gentle blues, grays, and hints of warm tones that suggest the time of day. The church itself stands prominently, showcasing its architectural details, while surrounding elements blend harmoniously into the background.

This creates a serene atmosphere that invites contemplation. The painting is executed in oil on canvas, a medium that allows for rich texture and depth. Whistler's brushwork is loose yet deliberate, capturing the essence of the scene rather than focusing on minute details. The composition is balanced, with the church as the focal point, drawing the viewer's eye.

The overall effect is one of tranquility, characteristic of Whistler's Impressionist style. James Abbott McNeill Whistler was an American artist known for his contributions to the Impressionist movement. 'Church, Brussels' reflects his interest in the interplay of light and architecture. An interesting fact about this work is that it showcases Whistler's ability to blend realism with impressionistic techniques, creating a unique perspective on a familiar subject.

This painting exemplifies his exploration of urban landscapes and their emotional resonance.