The Theme Building is a structure at Los Angeles International Airport (LAX), considered an architectural example of the Space Age design style. Influenced by "Populuxe" architecture, it is an example of the Mid-century modern design movement, later to become known as "Googie". In 1993, the city designated the exterior and interior of the Theme Building as a historic-cultural monument.
Honestly didn't know it closed until I just followed the Wikipedia link. Kinda neat place, ate there once when taking a flight. Kinda neat view with the whole revolving floor, food was meh though.
So frustrating that "destinations" like this often have "meh" dining experience.