Begin your Christmas Eve morning with a short walk from Luma Terra to the Old Town Square to soak up the festive atmosphere; browse the large Vánoční trh (Christmas market) stalls while sipping a warm svařák (mulled wine) and trying trdelník (sweet spit cake) from a local vendor. Pause at the Astronomical Clock to watch the hourly procession, then wander the narrow lanes toward the Church of Our Lady before Týn for peaceful interior views and seasonal nativity scenes.
After a light market lunch, stroll across the Charles Bridge taking time to admire the dozen baroque statues and the river views, pausing for street musicians and local artisans selling small crafts near the bridge towers. On the other side, explore the Lesser Town (Malá Strana) riverside paths and the Kampa Island park — look for the Lennon Wall and warm up with a savory svačinka (Czech snack) such as smažený sýr (fried cheese) at a nearby café.
Return toward Old Town as twilight falls to enjoy the square’s lights and a more intimate market vibe; choose a cozy family-run restaurant like U Modré Kachničky or Lokal for classic Czech dishes (svíčková or goulash) and seasonal sides. Finish the evening with a gentle riverside walk back toward Charles Bridge to see the illuminated skyline before heading to Luma Terra to rest and prepare for your Castle District day tomorrow.
Leave Luma Terra after a relaxed breakfast and walk up into Hradčany to arrive at Prague Castle grounds just as the morning light softens on St. Vitus Cathedral; enjoy free views of the cathedral façade, the Golden Lane’s exterior and the sweeping panorama over the red roofs of the city. Stroll down the castle terraces toward the Palace Gardens and stop by the quiet Pražský hrad viewpoints for photos and a hot chestnut or local pastry from a nearby vendor.
Descend toward Lesser Town and follow the Vltava riverside west along the castle side, passing Matthias Church and the scenic Nerudova Street facades before pausing at Kampa Park to watch the river and bridges; seek out a quaint café on Malostranské náměstí for a simple Czech lunch like a hearty goulash or smažený sýr with a warm drink. Continue along the river under Čechův most toward Letná Park for expansive winter views of the city and the giant metronome, taking time to enjoy the crisp air and street photography opportunities.
Retrace a gentle riverside route back toward the city center, stopping at a traditional pub near the Charles Bridge approach for a final Czech plate (svíčková or roast pork) before making your way to Hlavní nádraží; allow extra time to walk through Wenceslas Square if you wish to glimpse last-minute Christmas lights and small stalls. Arrive at Prague Main Railway Station by 19:00-19:30 for check-in and boarding procedures for your 20:00 departure, with warm memories of festive markets, castle panoramas and cozy local meals to take with you.