Bow down my soul in worship very low
And in the holy silences be lost.
Bow down before the marble Man of Woe,
Bow down before the singing angel host.
What jeweled glory fills my spirit's eye,
What golden grandeur moves the depths of me!
The soaring arches lift me up on high,
Taking my breath away with their rare symmetry.
Bow down my soul and let the wondrous light
Of beauty bathe thee from her lofty throne,
Bow down before the wonder of man's might.

 The church is roughly constructed in the shape of a cross, and at the center is a huge dome that rises over 100 meters. When one enters, the eye is drawn constantly upward, and the symmetry McKay describes was the product of over forty years of painstaking design and construction led by the French architect Auguste Montferrand.  Montferrand died in 1858,  the same year construction was finished.
Saint Isaacs Church Petrograd