The Dome

A detail of the northern face of the Old Courthouse's dome.

The former Harrison County Courthouse in Marshall lit at Christmas

The building's dome is its most distinctive feature and stands above a four-level rotunda. The rotunda is crowned by a coffered or false dome. Between the coffered dome and the outer dome are the workings of four-faced clock, that has been recently restored. Surrounding the coffered dome are six walls, which would resemble a hexagon if view from above, all of which support the outer dome. On the outside is a false portico aligned with each wall. Where the side of the hexagonal floor plan meet, a V-shaped brick pillar where two sides of the hexagon meet; thus each side of the V-shaped brick pillars span two porticos. In between the V-shaped brick pillars are three marble columns; one on each side of every window set into the walls supporting the outer dome. The windows are aligned to feed light through stained glass insets in the coffered dome hanging over the rotunda.

A cornice extends out over the false porticos and their pillar from the bottom of the outer dome. A balustrade, runs along the top of the cornice which like the porticos below it would appear as a hexagon if viewed from above. Eagle statues are perched wherever two sides of six-sided balustrade meet. The outer dome rise in from the cornice, which if viewed from above would appear as a circle inside a hexagon. The north, south, east, and west side of the outer dome are interrupted by clock faces, which maintain a vertical position even as the outer dome curves backwards. A false belfry, reminiscent of the lantern on top of the United States Capitol building, is located on top of the outer dome. On the top of the belfry is a 6-foot-tall (1.8 m) statue of Lady Justitia, which has the typical features of any Lady Justice: a blindfold, scales, and raised sword; as well as the rather atypical feature of a set of wings.