I seem to remember that I encountered Coleridge's Kubla Khan first in one of Arthur C. Clarke's books, but I cannot quite pinpoint which one, and for once the internet was not helpful here. Maybe it was The Fountains of Paradise, but it must be more than fifteen years that I read it, and I cannot find my copy after moving six times.

And of course, Kubla Khan is the poem that features so prominently on the first 30 pages of Douglas Adams' Dirk Gently's Holistic Detective Agency.

KUBLA KHAN

In Xanadu did Kubla Khan
A stately pleasure-dome decree:
Where Alph, the sacred river, ran
Through caverns measureless to man
    Down to a sunless sea.
So twice five miles of fertile ground
With walls and towers were girdled round:
And there were gardens bright with sinuous rills,
Where blossomed many an incense-bearing tree;
And here were forests ancient as the hills,
Enfolding sunny spots of greenery.

But oh! that deep romantic chasm which slanted
Down the green hill athwart a cedarn cover!
A savage place! as holy and enchanted
As e'er beneath a waning moon was haunted
By woman wailing for her demon-lover!
And from this chasm, with ceaseless turmoil seething,
As if this earth in fast thick pants were breathing,
A mighty fountain momently was forced:
Amid whose swift half-intermitted burst
Huge fragments vaulted like rebounding hail,
Or chaffy grain beneath the thresher's flail:
And 'mid these dancing rocks at once and ever
It flung up momently the sacred river.
Five miles meandering with a mazy motion
Through wood and dale the sacred river ran,
Then reached the caverns measureless to man,
And sank in tumult to a lifeless ocean:
And 'mid this tumult Kubla heard from far
Ancestral voices prophesying war!
    The shadow of the dome of pleasure
    Floated midway on the waves;
    Where was heard the mingled measure
    From the fountain and the caves.
It was a miracle of rare device,
A sunny pleasure-dome with caves of ice!

    A damsel with a dulcimer
    In a vision once I saw:
    It was an Abyssinian maid,
    And on her dulcimer she played,
    Singing of Mount Abora.
    Could I revive within me
    Her symphony and song,
    To such a deep delight 'twould win me,
That with music loud and long,
I would build that dome in air,
That sunny dome! those caves of ice!
And all who heard should see them there,
And all should cry, Beware! Beware!
His flashing eyes, his floating hair!
Weave a circle round him thrice,
And close your eyes with holy dread,
For he on honey-dew hath fed,
And drunk the milk of Paradise.

Samuel Taylor Coleridge (1797)

And this one ended up in my Ph.D. thesis...

I liked the notion of being with our backs to bright Reality - it has a certain appeal to a theoretical physicist.

from: The Destiny of Nations
Samuel Taylor Coleridge (1795)