We all take on pet projects in our lifetimes, and sometimes, those projects can turn into full-blown passions -- and for the lucky few of us, we can even translate our passions into careers. However, no matter what we've gotten into at any point in our lives, odds are we haven't tackled it with the long-term tenacity of this man, the Spaniard who spent over five decades working on the same thing. What's more, we're not talking about something small like a painting or a garden: This guy spent all of that time building an enormous cathedral, mostly by himself, and mostly by hand.
We know: It makes our hobbies and undertakings feel a little, well, underwhelming. But what drove him to complete this task (which remains unfinished, even though he's in his nineties) will surprise and inspire you. We should all be so dedicated as Justo Gallego, because what he created is nothing short of absolutely mind-blowing.