extra ordinary?

a while ago my little brother and I were exchanging emails (doesn't happen often)

he told me he had done something "quite extraordinary" (but wouldn't tell me what)

. . .he gave me a hint (after a little sibling pester power)

. . .I guessed (I'm like that)

here it is (well, part of it):

(if you do want to know more, and I'm not saying you do, google "Dubai 360 photograph HIPA" and click on one of the news channels)