This place was incredible. "It's smaller on the outside," he murmured. It caused the Doctor who was standing by the console to raise an eyebrow, commenting "that's not the normal reaction." Except it was.
Rob slowly made his way down the stairs trying to take everything in. Martha had taken a pause, parking herself on the Jump Seat becuase her feet were bothering her. This time the Doctor didn't ask her to move. He knew better that the wrath of pregnant women was best kept off of him.
"This place is incredible," he finally verbalized his thoughts. At that the Doctor was pleased.
"She's got more rooms than we were able to count," martha said after a moment. "She loves playing the game hide the pool..." at that Martha paused, wondering if she'd left her favorite top here and that was why it'd been missing for such a long time...
"I believe that Jack said something about a tour?" Rob turned to his friend as the Doctor walked over to martha with some kind of scanner in his hand and started pointing it at her. To which she rolled her eyes and said 'you could have told me we were starting.' Of course it was just preliminary... he'd have to take her to the lab proper.