Searched for https://pt.unesco.org/news/sitio-roberto-burle-marx-passa-integrar-lista-do-patrimonio-mundial-da-unesco 
Note: This calendar view maps the number of captures of https://pt.unesco.org/news/sitio-roberto-burle-marx-passa-integrar-lista-do-patrimonio-mundial-da-unesco, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.