Item was opened briefly for inspection and photos (see photos) and then repackaged for sale. Celebrate The Happiest Place on Earth with the Disneyland 70th Anniversary Plaque. This golden finish bas relief replica honors the grand opening of Walt Disney’s original Magic Kingdom, which opened to the public July 17, 1955. Now you can highlight this heartfelt moment in Disney history by taking a souvenir of the park home to display and inspire future dreams! Magic in the details.’Grand Opening Disneyland – 1955′. Disneyland first opened to the public on July 17, 1955. Resort 70th Anniversary Vault Collection. 16” H x 10 1/2” W.