Answer:
It has the biggest wall and is also used when drinking tea.
The more you take, the more you leave behind. What are they?
Which is the oldest tree?
Temporary evidence of where you've been strolling
What can be any size or shape and gets bigger the more you take from it?
What gives life and love, and is there till they die? What can hide you and find you, heal you and feed you but should never give up on you?