How does the author describe courthouse on day of trail?

In "To kill a mockingbird" by Harper Lee, the courthouse on the day of the trail is described as a "tired old building," with a "sagging portico" and "weathered steps." The author uses these descriptions to convey a sense of the building's age and neglect, and to create a feeling of foreboding and suspense. The courthouse is also described as being "crowded" and "hot," with a "buzz of activity" in the air. This suggests that the trial is a major event in the community, and that the outcome is eagerly anticipated.