The circle shaped trail called Zlatý Kůň (the Golden Horse) is 3,5 km long with 11 stops. It beginns and ends near the Koněprusy Caves. and makes an interesting addition to the caves visit. 
The pannels inform about the geological history of the area, the old limestone quarries and their revitalisation,the locas fossils finding fields, local flora and fauna and Kobyla Nature Reserve (a former quarry 1 km from Zlatý Kůň). The trail will lead you to Houbův Loom - a quarry, from which the Koněprusy Caves were in 1950 discovered. https://ceskykras.nature.cz/-/naucna-stezka-zlaty-kun Coordinates: 49.9159703, 14.0683947

There are 9 stops with informational pannels on the trail. The trail starts in Slavíky village and continues to Koukolova Hora with Chapel of St. Blaise. From Koukolova Hora the trail leads to Havlíčkův Mlýn village. From Havlíčkův Mlýn there is a steep path leading to Kotýz via the Axamit Gate, where the trail ends. https://www.berounsko.net/aktivity/koukolova-hora-kotyz/ Coordinates: 49.9157444, 14.0211214

There are plenty of memorable trees in Beroun region. The list of them can be found in the respective Nature Reserve website.

CZECH KARST NATURE RESERVE

KŘIVOKLÁTSKO NATURE RESERVE

You can follow an educational trail The Memorable Trees of Karlštejnsko, which is described HERE.

The trail was opened on 9 April 2017. It starts at Beroun train station and leads via Tetín village to Srbsko. It is 7 km long, and partly leads on the road with other traffic.

The trail starts near Stroupínský mlýn by the road between Březová and Hředle villages. The trail is bidirectional. The other starting point is located in the woods near Andreska hájovna "Pod Kamencem“. The trail follows the Luční Stream and consists of 10 educational pannels informing visitors about local fauna and flora. https://krivoklatsko.nature.cz/-/naucna-stezka-udoli-ticha?redirect=%2Fnaucne-stezky Coordinates: 49.9046364, 13.8987053