My Lands: Black Gem Hunting

ive just noticed if you have the right crystals you can upgrade your tavern to level 2 but im failing to understand why someone would do this? because ive had a look on the Encyclopaedia and it doesn't state that a level 2 tavern does anymore more/different to a level 1 tavern ....

Does anyone know if a level 2 tavern does anything more than a level 1?

If you upgrade the tavern and make it perfect there is a chance that you will receive a random scroll every day. If you ask me it's worth it and I would go for that building as my first upgrade.