Christchurch people got a rare opportunity to see inside one of the world's largest planes yesterday when the United States Air Force celebrated the start of its summer Antarctic programme by opening the doors of its C17 Globemaster to the public.

The giant aircraft will be used by the Americans, who, along with the Italians, use Christchurch as the logistics hub for their Antarctic operations, to transport expeditions to and from the icy continent this season.

Despite Christchurch's devastating earthquakes, both the Americans and Italians have renewed their commitment to continue using the city as their gateway to Antarctica.

Mayor Bob Parker said it was an honour that these programmes remained committed to Christchurch despite the damage the city sustained in the quakes, adding they were important economically because they directly contributed $88 million to the Canterbury economy.

"We are doing all we can to welcome these international guests back to Christchurch and to ensure they continue to enjoy the southern hospitality we have become famous for," Parker said.

The start of this year's Antarctic season has extra significance for Christchurch as the city is also commemorating the 100th anniversary of Captain Robert Falcon Scott's legendary expedition to the South Pole.

A wreath honouring Scott and others who lost their lives in Antarctica will be laid today following the annual South to Antarctica church service, which is usually held in ChristChurch Cathedral but which was shifted this year to Christ's College Chapel because of quake damage.

Christchurch still gateway to icy realm
MARTIN HUNTER/Fairfax NZ

Giant lift: Hundreds of plane-spotters turned out to see the giant US Air Force C17 Globemaster yesterday.