Trying to get property of non-object in laravel

I have following code

In controller

  public function ViewPost($id)
        {
             $viewpost= Post::find($id);
              return view('Guest.viewpost', ['viewpost'=>$viewpost]);
        }

In view

  @foreach($viewpost as $val)

        <br>
        Post title=
        <a href="viewpost/{{$val->id}}" >{{$val->post_title}}</a>
      <br>
        Post content={{$val->post_content}}
        <br>  <br>
        Featured Image=<img src="{{$val->featured_image}}" height="150" width="150">
      @endforeach

But above code throw an error Trying to get property of non-object. so i tried following way

 $val['post_title'];

The above code wont throw an error nor displaying output.

If i print in controller it display output but same in view if i print it give error

 print_r($viewpost);

I am using laravel 5.1. Can any one tell us what i am doing wrong ?
Thank you.

Update

after the suggestion of @CodeRomeos.i can able to display data image not loading.

<img src="{{$val->featured_image}}" height="150" width="150">

<img src="uploads/penguin.jpg">

same works in show view

Answer:

Update your controller like this

public function ViewPost($id)
{
     $viewpost= Post::find($id)->first();
      return view('Guest.viewpost', ['viewpost'=>$viewpost]);
}

or

public function ViewPost($id)
{
     $viewpost= Post::find($id)->get();
      return view('Guest.viewpost', ['viewpost'=>$viewpost]);
}

Do come back if you still face the issue.!