1970 — "Tiger Knight," the first IMAX film, premieres at Expo '70 in Osaka, Japan. Audiences are in moving seats.
1971 — Cinesphere, the first permanent IMAX theater, opens at Ontario Place, an amusement park in Toronto.
1973 — The first permanent IMAX theater in the United States opens at the Reuben H. Fleet Science Center in San Diego, Calif.
1976 — "To Fly!" premieres at the Smithsonian's National Air and Space Museum, where it continues to play to this day. It will be the top-grossing large-format film until being overtaken by "Everest."
1983 — The Fort Worth Museum of Science and History's Omni Theater opens. The domed screen is 80 feet tall.
1998 — "Everest," featuring mountain climber Beck Weathers, opens. It becomes the first IMAX film to make it into the box-office top 10.
2000 — Disney's "Fantasia 2000" opens.
2003 — Disney releases James Cameron's 3-D film "Ghosts of the Abyss" in both 70mm and 35mm formats.