I learned something interesting recently. There are only four self-supporting marble domes in the world and the second largest one is at the Minnesota State Capitol in St Paul. It is made of Georgia (US State) marble and weighs more than fourteen million pounds and has a diameter of 87 feet.

The largest is St Peter’s at the Vatican in Rome. It has a diameter of 138 feet. The other two are the Taj Mahal in Agra, India with a diameter of 58 feet, and the Rhode Island State Capitol with a diameter of 50 feet.

The building was renovated in 2017 and the interior is impressive.