Category: roofs, ceilings, towers...

a rooftop garden for an apartment building
flying over the "roof of the world - the 96 Himalayan peaks
a fresco painted on one of your ceilings
the Porcelain Tower of Nanking, Devils Tower in Wyoming, the Leaning Tower of Pisa, Toronto's CN Tower, the Tower of London, Eiffel Tower in Paris
the vault soffits of the Pompeian baths
modifiers often denote a tower's function, e.g. water tower, watchtower, church tower, bell tower, siege tower
We've removed the ceiling above our dreams. There are no more impossible dreams. (J. Jackson)
There are always terrible things waiting to grab you by the ankle, to pull you under... And you lie in bed and look at the shadows on the ceiling and feel, under the covers, just for a moment, like you're safe. One more day alive. (A. Quindlen)
A well-ordered life is like climbing a tower, the view halfway up is better than the view from the base, and it steadily becomes finer as the horizon expands. (W.L. Phelps)