On the upper reaches of the river there is an extensive
nature monument called Javorka a Cidlina – Sběř. It has an area of and, in addition to the Cidlina bed, it also covers the bed of the lower course of the Javorka and some areas on the banks of the Cidlina. The reason for the protection is to ensure a stable population of species of plants and animals that are endangered and protected within the Czech Republic, especially the
thick shelled river mussel, the
dusky large blue, the
Eurasian otter and the
green snaketail. The area of the fishpond Žehuňský rybník and its surroundings is protected as Žehuňský rybník National Nature Monument. It has an area of . Endangered species found here include the
narrow-mouthed whorl snail and several rare species of the genus
Taraxacum (
bavaricum,
pauckertianum and
irrigatum). The secondary spring of the Cidlina is located in Jezírko pod Táborem Nature Monument on an area of . It is a small peat pond with a population of the
round-leaved sundew. ==Tourism==