The Doctor’s voice echoes in an empty hall, but for that sound of swishing.
Sheer surprise forces him to sway a little when he sees the signage on the wall, placed low near the handrail for one side of the balcony.
Two lines, three… all red paint- it reminds him of Tegan’s melting red lipstick, that time when the TARDIS was about to blow up, and... Suddenly the wall below the lines is made of rough grey swimming pool concrete where it was white marble before.
The fourth line reads:
It’s damp, darkened by years of…
My feet… he realises, as the cold, clear fluid creeps down his trouser leg, drowning his shoeless ankles.
…no shoes. Ah. Of course.
“Well, then,” he murmurs, placing his hand over his hearts, “...it won’t be long now will it, my little dollop?”
Shrugging once, he follows the left hallway off the main. He then follows the off-corridor to the end of that wing and down, to the top of the entry stairs, swishing his feet through the softly clapping water as it rises.