Prague Castle isn't a single building – it's an entire walled hilltop complex of palaces, a cathedral, gardens and towers, built up in layers since the 870s, and still the official seat of the Czech president today. At around 70,000 square metres, Guinness World Records lists it as the largest ancient castle complex on earth.
A thousand years in one place
The site began as a wooden fort under Prince Bořivoj, the first Přemyslid ruler to convert to Christianity. Stone fortifications, palaces and churches followed over the centuries, but the single biggest addition came under Charles IV, King of Bohemia and Holy Roman Emperor, who commissioned St Vitus Cathedral in 1344. The Gothic cathedral took so long to complete – interrupted by wars, changing architects and shifting styles – that it wasn't actually finished until 1929, nearly 600 years later. Inside, the St Wenceslas Chapel holds the tomb of the country's patron saint, and a locked chamber holds the Bohemian crown jewels, brought out only on rare state occasions.
What's free, what isn't
The castle's courtyards, gardens and the exterior of St Vitus Cathedral are open to everyone, free, from 6am to 10pm daily – it's a real functioning part of the city, not a fenced-off monument. Going inside the cathedral's nave, the Old Royal Palace, St George's Basilica or the Golden Lane (a row of small, colourful former guards' houses) needs a paid ticket, sold in a few different circuits depending on how much you want to see. A free, popular extra either way is the changing of the guard at the main gate – hourly, with a longer ceremony at noon.
Getting the details right
Because the complex is so large, most first-time visitors do better with either a clear, structured ticket circuit or a guide who keeps the visit moving, bundling entry with the tram ride up and roughly two and a half hours of guided context – see our Prague Castle tickets guide for the exact ticket options and prices if you'd rather go at your own pace instead. For a different angle on the same building, a Vltava evening cruise passes the illuminated castle from the river after dark, or walk down to Charles Bridge for the classic view back up toward the castle from ground level.
Good to know
Frequently asked questions
Yes – it's not a single building but an entire walled complex of palaces, a cathedral, gardens and towers built up over more than a thousand years, and it's still the official seat of the Czech president today.
Image: Janmad via Wikimedia Commons (CC BY 3.0)