Proxy Internal Webserver

I have an apache server that I want to proxy an internal server ( from an external domain name

Below is my virtualhost for the main server.

<VirtualHost *:80>
ServerName <a href="" title=""></a>
DocumentRoot /var/www/html/example
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
ProxyRequests On
<Location /site1>
ProxyPass <a href="" title=""></a>
ProxyPassReverse <a href="" title=""></a>
Order allow,deny
Allow from all

What I see is when I try to go to my site, is that the
client's url changes to which is invalid. What I
need is the client to display the page of at the
domain of

What do I need to change in the above to make this work?