saw a significant increase in location shifts. The opening scenes of the season premiere were shot on location in Iceland, while Henry Ford II's 1960 estate in the Hamptons was used as the Roys' summer home. Oheka Castle in Huntington, New York, stood in for the Roys' hunting lodge in Hungary for the episode "Hunting". Filming also took place in Long Island, with a mansion once belonging to Junius Spencer Morgan featuring prominently in the episode "Tern Haven". The estate is one of several in the area used as filming locations for the second season. From April through May 2019, the production recruited extras for filming in Lake Placid, and Lake George, New York, where the episode "Argestes" was shot. Production moved to Dundee for the eighth episode, with additional filming taking place in Glasgow and Ayr for the preceding episode (which takes place in England). Starting from July 17, 2019, the crew filmed in Korčula, Croatia, for the second-season finale episode "This Is Not for Tears", including extensive scenes on a yacht. Filming for season 3, which was slated to begin in April 2020, was postponed due to the COVID-19 pandemic. In early November 2020, star Alan Ruck announced that filming would begin in mid-November in New York City. The season had begun filming in New York as of December 2020. Filming locations in the city included the Woolworth Building in Tribeca, The Shed in Hudson Yards, and a number of hotels including the Marriott Marquis in Times Square and the Plaza Hotel on Fifth Avenue. Production also returned to the Hamptons, at locations including Montauk and Wainscott. In May, additional filming for season 3 took place in Richmond, Virginia, primarily at the Jefferson Hotel. In June, production on the third season moved to Italy for the final two episodes, with filming primarily taking place in the Val d'Orcia region of Tuscany – where a wedding reception was filmed at the estates La Foce and Villa Cetinale. Additional filming took place in other nearby comuni in the province of Siena – including Pienza, Montalcino and Chianciano Terme – as well as in Cortona, Lake Como, Milan, and Florence (the lattermost of which was used for establishing shots in the opening episodes). Production on the 10-episode fourth season began in New York City on June 27, 2022, with Mark Mylod directing the first episode. In October 2022, it was confirmed