Vodni Nadrz Matylda is a flooded former gravel quarry in Bohemia, Czech Republic, offering a sheltered, current-free basin for divers and snorkellers. The site features an artificial reef structure that serves as a focal point for navigation and buoyancy practice. With depths consistently between 3 and 4 metres, it provides a forgiving environment for beginners. Visibility typically ranges from 5 to 10 metres. Divers should remain aware of potential entanglement hazards when navigating the artificial structure. The site is accessible from the shore and supports year-round activity, including night diving. On-site facilities include parking, toilets, showers, gear storage, and a cafe.

Jezero Most is a freshwater site in Bohemia, Czech Republic, formed from a former mining area. The site features artificial reefs and wrecks, offering a varied topography for divers. Depths range from 5 to 30 metres, with an average depth of 12 metres. Divers can expect mild currents and visibility typically between 6 and 10 metres. Shore entry is available, and the site is suitable for beginners. Hazards include cold water, potential for entanglement, and periods of low visibility. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, air fills, equipment rental, a dive shop, and guided tours.