Featuring the photogenic ‘dishes’ and twin towers, the Congresso Nacional is one of the more interesting buildings on the inside as well. In addition to the color-coded chambers of the Senate (blue) and House of Representatives (green), there is an architecturally interesting ‘Tunnel of Time’ and an exhibit of antique Senate benches and microphones from 1867.
The convex dome on the roof of the House of Representatives is supposed to signify that membership is open to all ideologies. Visits on Tuesday, Wednesday and Thursday (or for non-Portuguese guides) must be scheduled.