In 1575, William of Orange granted Leiden its own university as a reward for resisting the Spanish siege. From that moment on, this city not only liberated itself but became a beacon of knowledge that still shines today with the intensity of a cultural reactor. Prepare for an immersion where every street tells a story and every building is a challenge awaiting your ingenuity. Cross the Oude Singel and feel history beneath your feet. Discover the secrets hidden in the St. Peter's Church - St Pieterskerk, where centuries of wisdom have been deposited in every stone. Investigate the origins of the Herenpoort, an entrance that transports you to a past of grandeur and battles. The city is an open book, but only the most audacious can decipher its most hidden chapters. Can you find the connection between an ancient windmill and the pioneers who changed the world from here? Walk along the Rapenburg, a historic canal flanked by the most elegant houses, and perceive the echo of great thinkers. Conquer the remains of Kasteel Swieten and solve the enigma surrounding the Barend van Namenshofje. Leiden awaits you with cultural points of interest and nearly 1,324 challenges. Each one is a piece of a puzzle that only you can assemble. Are you ready to become the next guardian of its legacy?
Choose your experience in Leiden
Treasure hunt in Leiden
90-minute street escape: cultural challenges against the clock at 15 real locations.
View details →Self-guided tour of Leiden
Must-sees at your own pace, with narrated audio. 24-hour access.
View details →Team Building in Leiden
Team competition with live rankings. Winners play free.
View details →What are you gonna find out?
A sample — in total 15 points of interest with 64 challenges await you.
- ◆Herenpoort
- ◆Kasteel Swieten
- ◆Heilige Maria Middelareskerk
- ◆Sint-Petruskerk
- ◆Barend van Namenshofje
- ◆Aeldisbrug
- ◆Rapenburg
- ◆Iglesia de San Pedro-St Pieterskerk
- ◆Molino de Viento
What kind of places await you
Playable in: 🇪🇸 ES · 🇬🇧 EN · 🐱 CA · 🇫🇷 FR · 🇷🇺 RU · 🇩🇪 DE · 🇮🇹 IT · 🇵🇹 PT · 🇸🇪 SV
Frequently Asked Questions
¿Cuánto dura la experiencia completa?▾
Depende de tu ritmo. Recorrer los 15 puntos de interés puede llevarte entre 2 y 3 horas distribuidas en varias sesiones. Puedes pausar cuando quieras y retomar donde lo dejaste.
¿Necesito descargar una app?▾
No. GeoCats funciona 100% desde el navegador de tu móvil. Solo necesitas conexión a internet y activar la geolocalización.
¿En qué idiomas está disponible?▾
En los 9 idiomas, incluyendo español, inglés, francés, alemán, italiano y portugués.
¿Hay edad mínima recomendada?▾
Los retos están pensados para mayores de 12 años con interés en cultura urbana. Menores pueden jugar acompañados.
¿Qué pasa si fallo un reto?▾
Puedes reintentar sin límite. Si te atascas, el sistema te ofrece pistas progresivas. No pierdes XP por equivocarte, solo avanzas más lento en el ranking.
The places, as you will see them
Real photos of the game's points of interest in Leiden.



























