Babiččino údolí, National nature monument in the Úpa River valley, Česká Skalice, Czech Republic

Babiččino údolí is a nature reserve in the valley of the Úpa River, featuring waterways, meadows, and forests with diverse plant communities. A marked educational trail connects multiple viewpoints and showcases the area's natural variety.

The Ratibořice estate is first documented in 1388 under knight Vaněk of Žampach. In 1702–1707 a one-storey Baroque chateau with a chapel was built there, and from 1792 the Duchy of Zaháň reshaped the valley. The reserve was established on 9 June 1952 by decree of the Czechoslovak Ministry of Education, Sciences and Arts, and in 1978 the landscape complex was declared a national cultural monument.

The valley is named after Božena Němcová's novel 'Babička', set in Ratibořice where she spent her childhood under her grandmother's care. Writer Otakar Jedlička first used the name in 1878; the Ministry of Education made it official in 1952. The novel's locations Viktorčin splav, Staré bělidlo and Ludrův mlýn lie along the Úpa.

The best way to explore is on foot using the marked trail with information panels positioned throughout. Multiple entry points are available depending on where you want to start and finish your walk.

The area hosts rare butterfly species including Phengaris nausithous and Phengaris teleius that researchers regularly study. These butterflies depend on specific plants found in the meadows for their reproduction cycle.