<ul>
  <li>
    <a href="/About/History.aspx">History</a>
  </li>
  <li>
    <a href="/About/Contact.aspx">Contact</a>
    <ul>
        <li>
            <a href="/About/Contact/Email.aspx">Email</a>
        </li>
        <li>
            <a href="/About/Contact/Phone.aspx">Phone</a>
        </li>
    </ul>
  </li>
</ul>