He entered that city over the ruins of the old ramparts, which were now being dismantled in accordance with the French demands.
The marriage took place at Vienna by proxy; the bride was conducted to Paris; and the final ceremony took place at Notre Dame on April 2nd, but not until the union had been consummated.

Such were Napoleon's second wooing and wedding.

Nevertheless, he showed himself an attentive and even indulgent spouse, and he remarked at St.Helena that if Josephine was all grace and charm, Marie Louise was innocence and nature herself.
The Austrian marriage was an event of the first importance.

It gained a few years' respite for the despairing Hapsburgs, and gave tardy satisfaction to Talleyrand's statesmanlike scheme of a Franco-Austrian alliance which should be in the best sense conservative.

Had Napoleon taken this step after Austerlitz in the way that his counsellor advised, possibly Europe might have reached a condition of stable equilibrium, always provided that he gave up his favourite scheme of partitioning Turkey.