On a homebound AAR Trail of four Jaguars with our VC10, we gave away all our fuel to get them to the east coast and we diverted into Lester Pearson Int'l, Toronto.
The next day, we had been chatting over brunch in the CN Tower about, "Wouldn't it be great if we could get some photos of Niagara Falls on departure?" Nothing ventured, nothing gained. We asked if we could conduct "a modified Buffalo departure". ATC knew what we wanted to do, so gave us initial vectors to the overhead of Niagara Falls with the instruction to "enjoy, and tell us when you're done!".
After three full orbits at 1000' with the pax and crew all getting great photos, we gave our thanks to ATC and climbed out en-route.
As kcockayne has stated, they were "more innocent times" - how the world has changed.