Trying to decide on a summer routine... advice?

[tygy96]

So I'm lucky enough to have been accepted into this study abroad program this summer travelling Greece and Italy but I need some help designing a routine to maintain/gain mass while I am there. I obviously will not have access to a gym so the entire routine can't include weights.

Advice? And don't be a ****hole to me just because I haven't posted on am before now. Thanks