The Landmark opened on the night of July 1, 1969, a day before the International Hotel. The resort was first unveiled to 480 VIP guests prior to the public opening, which was scheduled for after 9:00 p.m. Apollo 10 astronauts Thomas P. Stafford and Eugene Cernan attended the grand opening, and were the first people to enter the new resort. Other guests included Cary Grant, Dean Martin, Jimmy Webb, Phil Harris, Tony Bennett, Sammy Cahn, Steve and Eydie, and Wilt Chamberlain. Nevada governor Paul Laxalt, as well as senators Alan Bible and Howard Cannon, were also at the opening. Three members of the Los Angeles Rams were also in attendance: Jack Snow, Lamar Lundy, and Roger Brown.