Riddles(谜语) 两则英语谜语,可以过来看看,帮帮忙,应该比较简单

Riddles(谜语) 两则英语谜语,可以过来看看,帮帮忙,应该比较简单
No.1
I have forests with no trees.
I have cities with no houses.
I have rivers with no water.
What am I ? ( )
No.2
Two little boats without any sails.With passengers on board.
They don't go on the river or sea . But travel on dry land.
In the day the boats pass to and form.
But at night they are both empty.
What are they? ( )
大家知道吗?