Electrical wiring was replaced, new pipes were installed, the papal bedroom given a thorough makeover, and the kitchen was refurbished.

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The instrument, which has 7, 710 pipes, was installed in the auditorium in 1954 but was removed for renovation work.

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During a tour of the latest construction site, the interior of the West Building was still largely raw space, while the taller annex building already had pipes and wiring installed.

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And rather than relying on salt caverns, SustainX uses standard steel pipes to store the compressed air, allowing its systems to be installed wherever they are needed.

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