
The Star (Zvijezda)
A 1579 Renaissance star-fortress, the core of Karlovac.
Photo: Szeder László / CC BY-SA 4.0
Green river water spilling over soft travertine steps.
The Mrežnica is one of Karlovac's four rivers and arguably the loveliest place to swim around here: clear green water dropping over dozens of low travertine barriers. Calm pools form between the steps, with meadows and woodland along the banks. In summer you simply jump in and drift from pool to pool.
In high summer the water turns pleasantly warm; water shoes help on the travertine.
A small next-step selection from the same city.

A 1579 Renaissance star-fortress, the core of Karlovac.
Photo: Szeder László / CC BY-SA 4.0

Tanks and true stories on Karlovac's former front line.
Photo: VitVit / CC BY-SA 4.0

The witches' mountain above Ogulin, a rocky head with huge views.
Photo: Zorro.mstitel01 / Public domain
Use the free map from home, then verify the discovery when you reach the place.