This slideshow explains how it's different between ni and e particles which indicate destinations or terminating points.

1. You know what?
in Japanese
n i h o n g o
a n o n e n o n e
にほんご あのねのね
File #001
n i
e
Particle に and へ that indicate destinations

2. n i
e
Particle に and へ that indicates destinations
n i
e
There are two particles, に and へ, and both indicates
destinations or terminating points.
!
The most simple Japanese verb that takes these particles
i
k
i masu
is いきます, to go.
!
Now, let me explain the difference between these two
particles.

3. There’s a young couple having argue each other.

4. Then the guy decides to leave the room in order
to calm himself down to somewhere,,,

5. The lady is a little anxious wondering where the
guy went to,,,
？
？
？

6. In this stage she doesn’t know where exactly he
goes to, in other word, she even doesn’t know
which direction he is heading to.
doko
どこ
？
？
？
direction
direction
direction

7. k a r e w a
d o k o e
i t t a n d a r o u
かれは どこへ いったんだろう？
doko
どこ
？
へ
？
へ
？
へ

8. In a couple of hours the guy came back.

9. t a d a i m a
ただいま。

10. Now, she wants to know exactly the guy went to.
doko
どこ
？
？
？
pin point
pin point
pin point

11. d o k o n i
i t t e i t a n o
どこに いっていたの？
doko
どこ
？
に
？
に
？
に