Troja Castle Transforms with SIGNAL Festival’s Free Light Show

On Friday and Saturday, December 13 and 14, Troja Castle in Prague will host a mini-festival of light and video mapping, presented by SIGNAL and the Prague Gallery.

The event will feature a special video mapping projected onto the castle’s façade, alongside an exhibition of light installations in the underground gallery. Best of all, admission is free, and no prior reservation is required—just come and enjoy.

Honoring St. Lucia’s Day

This event coincides with St. Lucia’s Day, celebrated on December 13. St. Lucia, a Christian martyr from Syracuse, is honored as the patron saint of the blind and those suffering from eye ailments. The mini-festival offers a modern tribute to her legacy with illuminating art and cultural activities.

A workshop on crafting Christmas lanterns will also be available, making the festival a perfect blend of creativity and tradition. For more details on the workshop, visit the official event website.

St. Lucia’s Day is steeped in fascinating folklore. According to one Swedish legend, a fisherman’s wife named Lúsia braved a raging storm to guide her husband home.

With her lantern held high, she climbed a rocky cliff to light the path. Angered by her defiance, malicious spirits extinguished the beacon and took her life. Yet, even in death, her spirit stood firm, illuminating the shore with her lantern’s glow.

This story, like many surrounding St. Lucia, emphasizes themes of light triumphing over darkness—a perfect match for the festival’s luminous displays.

Festival Details

• Dates: December 13–14
• Time: 5:00 PM – 11:00 PM
• Location: Troja Castle, U Trojského zámku 4/1, Prague 7