In 1930, the e Indiana Bell Telephone Company rotated an 11,000 ton functioning telephone exchange it had acquired merging with Central Union Telephone Company,

In 1930, the e Indiana Bell Telephone Company rotated an 11,000 ton functioning telephone exchange it had acquired merging with Central Union Telephone Company, whilst work continued inside, and with water, sewerage, gas, and electricity service continuing uninterrupted, 90 degrees. The work was performed by the architectural firm of Vonnegut, Bohn & Mueller, co-founded by Bernard Vonnegut, father of the noted author Kurt. <https://www.archdaily.com/973183/the-building-that-moved-how-did-they-move-an-11000-ton-telephone-exchange-without-suspending-its-operations https://www.archdaily.com/973183/the-building-that-moved-how...>