Janos Molnar Cave is a thermal freshwater cave system located beneath Budapest. This site is exclusively for well-trained technical divers, as the overhead environment and depths ranging from 20 to 98 metres require full cave certification. Divers experience visibility between 20 and 30 metres, with mild currents throughout the passages. A thermocline exists at approximately 10 metres, with water temperatures varying between 20 and 28 degrees Celsius. Due to the depth and confined nature of the cave, proper buoyancy control is essential to maintain visibility. Guided tours, equipment rental, and air fills are available on-site to assist with planning.

Molnár János-barlang is a thermal cave system located beneath Budapest, fed by geothermal springs that maintain consistent water temperatures. Divers experience a thermocline at 10 metres, with temperatures around 20°C above and 27-28°C below. The site features depths ranging from 10 to 25 metres, with further passages extending deeper. This is a technical overhead environment requiring advanced qualifications and precise buoyancy control, as visibility can fluctuate due to sediment disturbance. Entry is from the shore, and the site offers facilities including parking, air fills, gear storage, and changing rooms. Guided tours are strongly recommended to navigate the complex passage system safely.

Kőbánya Mine is a flooded industrial site located beneath Budapest, offering a unique overhead environment for experienced divers. The cavern system features artificial structures at various levels, providing points of interest throughout the dive. Depths range from 15 to 38 metres, with an average depth of 15 metres. Visibility is excellent, typically between 10 and 30 metres in still, currentless water. Due to the cold water temperatures of 5 to 12°C and the overhead environment, this site is suited for intermediate to advanced divers. Shore entry is standard, and guided tours are strongly recommended for first-time visitors to ensure safe navigation through the mine.

Öböl Music Beach is a freshwater dive site located at Molnár János Cave in Budapest, Hungary. This artificial reef site offers a shallow diving experience with depths ranging from 2 to 6 metres, averaging 7 metres. Divers enter from the shore to encounter mild currents and visibility that fluctuates between 3 and 15 metres. The site is suitable for beginners and typically supports 45-minute dives. Facilities available on-site include parking, showers, air fills, equipment rental, and changing rooms. Divers should be aware of potential hazards including cold water, entanglement, and low visibility.

Lake Palatinus in Dorog provides a calm, current-free freshwater environment featuring an artificial reef structure. Suitable for beginners, the site offers depths ranging from 0 to 12 metres with an average of 8 metres. Visibility is generally 7 to 8 metres, allowing for clear navigation of the artificial features. Divers should maintain neutral buoyancy to avoid contact with the sharp surfaces of the reef structure. The site is accessible via shore entry and is well-equipped with facilities including parking, toilets, showers, changing rooms, and a rinse station. Air fills and guided tours are available on-site, supporting a comfortable experience for divers of varying skill levels.

Lake Palatinus is a freshwater site featuring an artificial reef structure designed for training and skill development. Divers can explore depths ranging from 2 to 12 metres, with an average depth of 7 metres. The site offers shore entry and is suitable for beginners, with mild currents and visibility typically between 2 and 8 metres. Summer water temperatures reach approximately 20 to 22°C. Facilities on-site include parking, toilets, showers, changing rooms, and air fills, making it a convenient location for multiple dives. Divers should monitor local conditions for surge and swell before entering the water.

Palatinus Lake, located near the Molnár János Cave in Budapest, offers a freshwater diving and snorkelling experience featuring artificial reefs and a wreck. The site is suitable for beginners, with depths ranging from 3 to 12 metres and an average depth of 10 metres. Divers and snorkellers access the water via a shore entry. Conditions are generally stable with mild currents and visibility typically between 3 and 8 metres. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, and a dive shop providing air fills and first aid services.