Simpsons appear on top of the Empire State Building to celebrate 30 years

<p>The Simpsons&#39; Bart, Lisa, Homer, Marge and Maggie appeared at the top of the Empire State Building in New York City on Monday to celebrate the animated television show&#39;s 30th anniversary.&nbsp;</p><p>With 600 episodes, The Simpsons has become the longest-running scripted show in television history. The Simpsons remains a cultural phenomenon -- an innovative entertainment franchise that tells satirical stories about one of America&#39;s most recognizable families.</p><p><span style="color: rgb(127, 127, 127);">(Compiled by Guo Yitong)</span></p>