[13][14] Demolition was delayed until 2023 by lawsuits about the project's environmental impacts to the trees in Capitol Park, which is immediately adjacent to the Annex site.

A cornice supports the pediment above depicting Minerva surrounded by Education, Justice, Industry and Mining.

A hand-carved dais caps off a recessed bay framed by Corinthian columns.

The Latin phrase "Senatoris est civitatis libertatem tueri" ("It is the duty of the Senator to guard the civil liberties of the Commonwealth") lines the cornice.

Today, Minerva, sculpted by Michael H. Casey, appears only in the senate chambers.

Behind the rostrum, there are two chairs with red velvet cushions, reserved for the president pro tempore of the senate and the speaker of the assembly, but they are never used.

The dais rests along a wall shaped like an "E", with the central projection housing the rostrum.

Along the cornice is the Assembly motto, in Latin: Legislatorum est justas leges condere ("It is the duty of legislators to establish just laws").

The entire Capitol Park area is included in the National Register historic district listing.