What do you like about Religion?

[Rokcet Scientist]

And it's black mirror image, on the other side of the river, is poetic genius.

Indeed,or it would have been,had it been built.

It was.
Only it wasn't a building, a physical mirror image, in black, of the white Taj as everybody assumed, but it was a large shallow reflecting pool! And when Shah Jahan stood at the far edge of the reflecting pool, at sunset, facing the white Taj, his beloved wife's mausoleum directly across the river, with the setting sun and lighter sky behind it, its mirror image, literally, in black, would be beautifully visible upside down in the reflecting pool.

Imo poetic genius.

The remains of the reflecting pool have been found.