Robert Langdon has been to Paris. To Rome. To Barcelona. To Florence. For his sixth adventure — Dan Brown's The Secret of Secrets, published in September 2025 and already in production as a Netflix limited series — he is heading to Prague. Filming began in Prague in the beginning of this months.
Prague has spent decades as Europe's most versatile stand-in city — doubling for Vienna, Berlin, Paris, Moscow, and practically any pre-modern European capital a production requires. The Secret of Secrets can break that pattern. The novel is set largely in the Czech capital, making the production one of the few major international projects to use Prague as itself rather than as a stand-in for another European city.
Brown's novel features recognisable Prague locations throughout, making authentic on-location filming not just desirable but structurally necessary. The city's Klementinum's Baroque library hall, Charles Bridge, the Four Seasons Hotel, Petřín Tower, Folimanka Par and the Jewish quarte are not only atmosphere. They are the plot.
Prague
Production began in Prague in early September 2026. Behind-the-scenes photographs show Morgan Spector and Rebecca Hall on location in the city, specifically at Náměstí Republiky 5 in Staré Město – confirming the two leads are in Prague and actively filming.
Recent location work has spread across the historic city centre. Production filmed in Prague's Old Town and Josefov neighbourhoods, including around Jan Palach Square near the Rudolfinum and on Čechův most – the bridge crossing the Vltava directly north of the Old Town. On September 2, the production moved inside the Art Nouveau Municipal House at Náměstí Republiky for what appeared to be a substantial sequence. Production equipment filled the area outside the building throughout the day. Its two main dining venues – the French Restaurant and the Art Nouveau Café – were closed for filming.
