On Tuesday, Roberts published his latest drone flyover, tracking the progress Apple has made to its “spaceship” campus that it plans to move into next year. Roberts, who posts drone flyovers each month, kicked things off this time around with a look at the progress being made to the roof, which is still not completed but well on its way.

Roberts then turns his attention to the “passive cooling and heating systems” built into Apple (AAPL) Campus 2, followed by the parking garages that are expected to hold 11,000 vehicles. He estimates that the solar panels, which will power Apple’s new campus in Cupertino, Calif., are now 75% installed.

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Drone flyovers from Roberts and other documentarians have been fun ways to see the progress being made on Apple’s new campus. When completed, the campus, which was the brainchild of late co-founder Steve Jobs, will feature 2.8 million square feet of office space and house 12,000 employees. It’ll have 700,000 square feet of solar panels and 7,000 trees. The campus will event feature underground tunnels, parking, restaurants, and much more.

The campus has been called a “spaceship” by those who have remarked at its circular design and heavy usage of glass.

While Apple is notoriously secretive and often likes to keep updates on its technologies close to the vest, the company has been noticeably willing with third-party drone operators to allow them to check out its campus progress. In addition to Roberts, Duncan Sinfeld has also been flying drones over the company’s campus each month.

In his four-minute video, Roberts showcased other areas besides the main building, including the 1,000-seat auditorium, which is currently in the process of being built. Interestingly, Roberts also took viewers along the campus’ secretive research and development facility, which, as he notes, is “taking shape.”

For more on Apple Campus, watch:

One other tidbit from the Roberts video: the 100,000-square-foot fitness center for employees is well on its way to being built.

In sum, though, Apple’s construction team has a long way to go before employees can move in. The main building is seemingly far away from completion, and it’s clear that some of the exterior facilities may not be ready in time for Apple’s expected January move-in date.

Still, Apple has kept to that date, and it hasn’t publicly said anything to the contrary, so expect to see its employees walking around the campus before long.