Love Philly? So do we. Let’s be friends. Sign up for the Billy Penn newsletter today. With its various history spanning more than 255 years, the Cliveden site has been a place where visitors and tourists alike can learn, explore and converse about the Germantown-centered country home. One of 19 historical sites among the Germantown section of Philadelphia, Cliveden was built and completed in 1767, as a country house for local attorney Benjamin C…