Guild Wars 2

Does Guildwars 2 have any significantly rewarding mysteries to solve in pve?

I don’t know what you would class as significantly rewarding but I found the lost ornithologist collection quest in one of the HOT maps (don’t remember what it’s called) to be intriguing and eerie. Reminded me of Poe somewhat.

There’s a pretty good scavenger hunt in Lion’s Arch to get Princess, a reward that eats dragonite ore and returns daily gifts.

Vayne.8563:

There’s a pretty good scavenger hunt in Lion’s Arch to get Princess, a reward that eats dragonite ore and returns daily gifts.

I’m not sure that would class as a mystery though. Something like finding Scarlett’s Lair and figuring out how to unlock it (which I still haven’t) might be more mysterious.

But if the OP accepts the princess hunt as a mystery, I suggest Herta – the HOT gobbler that eats bloodstone dust. It (she?) has a collection quest that’s somewhat intriguing.