This year, the private jets of many of the moguls at the invite-only retreat are already parked at the nearby Friedman Memorial Airport, and bigwigs from Apple CEO Tim Cook to Facebook's Sheryl Sandberg to Snap's Evan Spiegel and Daniel Spotify's Ek have been spotted at the conference, which runs through July 16.

Every summer, tech and media titans descend on Sun Valley, Idaho, for investment bank Allen & Co.'s annual conference, dubbed " summer camp for billionaires ."

Private jets are parked at the Friedman Memorial Airport during the annual Allen and Co. Sun Valley media conference in Sun Valley, Idaho

Tim Cook, chief executive officer of Apple, and Eddy Cue, senior vice president of Internet Software and Services at Apple, attend the annual Allen & Company Sun Valley Conference, July 10, 2019 in Sun Valley, Idaho.

Sheryl Sandberg, chief operating officer of Facebook, and Marne Levine, VP of Global Partnership, Business Development and Corporate Development, arrive for the annual Allen & Company Sun Valley Conference, July 9, 2019 in Sun Valley, Idaho.

While there, the industry leaders stay at Sun Valley Lodge, part of Sun Valley Resort, which was opened in 1936.

Take a look inside.

A small lake is at the entrance to Sun Valley Lodge.