<p class="ingestion featured-caption">A crew member at Burger King holds up a double cheeseburger in 1989.Glen Martin/The Denver Post/Getty Images</p><ul class="summary-list"><li><strong>In 1953, the very first <a href="https://www.businessinsider.com/burger-king-moldy-whopper-ad-campaign-showcases-no-preservatives-2020-2" rel>Burger King</a>, then called "Insta-Burger King," opened its doors.</strong></li><li>An early version of the Burger King logo featured curved letters sandwiched between two yellow buns.</li></ul>