Antarctica

Apparently The Princess Royal is going to visit South Georgia and take a
voyage on one of the British Antarctic Survey ships. Has any other royalty
visited the southern continent.

I know that Monaco's Albert I & II have made Arctic expeditions.

What about excursions to other out of the way places - Pitcairn, Diego
Garcia, Tristan da Cunha?

CJ Buyers...

Prince Philip "... has made two round-the-world voyages in the former
Royal Yacht BRITANNIA, visiting some of the remotest parts of the
Commonwealth as The Queen's representative. The four-month voyage of
1956-57 included visits to the remote South Atlantic locations of the
Falkland Islands, South Georgia, Tristan da Cunha, Ascension Island and
St Helena. During the voyage he undertook many royal engagements,
meeting Commonwealth communities and British service personnel and
workers. On one occasion, deep in the Antarctic, His Royal Highness
hosted a reception on board for the lonely scientists of the Survey
Base on Deception Island - it included a screening of 'Seven Brides for
Seven Brothers'."

(Gary Holtzman) garyholtzman...

I believe the Princess Royal has visited Antarctica before, as has her father.

the_verminator...

If memory serves, she visited Scott Base in 2002 and unveiled a some
sort of memorial.