The C-130 Hercules can basically land whatever the hell it wants, so the Danish Air Force took it to the beach because a) it's fun! and b) you never know when you will have to invade a country. You can see it from multiple angles, including the cockpit. Bonus: A collection of all-terrain Hercules landings -- and a carrier.
On desert sand:
On an aircraft carrier:
And on an extremely small runway, using rockets (the crazy C-130 Hercules Jet-Assisted Take Off variant):