Initially happy to be home, Hay quickly grew restive, and he was glad to hear, in early June 1867, that he had been appointed secretary of legation to act as chargé d'affaires at Vienna. He sailed for Europe the same month, and while in England visited the House of Commons, where he was greatly impressed by the Chancellor of the Exchequer, Benjamin Disraeli. The Vienna post was only temporary, until Johnson could appoint a chargé d'affaires and have him confirmed by the Senate, and the workload was light, allowing Hay, who was fluent in German, to spend much of his time traveling. It was not until July 1868 that Henry Watts became Hay's replacement. Hay resigned, spent the remainder of the summer in Europe, then went home to Warsaw.