We visited beautiful Springfield, Illinois recently and spent a few days exploring downtown and the countryside. Here near the center of town was the huge State Capitol Building with its central dome and rotunda seen from anywhere in Springfield. The building was started in the Spring of 1868 and completed 20 years later. The domes and roofs are zinc which are silver in color and do not weather. The top of the dome is 361 feet tall and exceeds even the Capitol building in Washington DC in height.
Even from a mile away, you can still see the dome down streets of Springfield: