Spiezerberg is a deep freshwater wall and canyon dive located in Lake Thun. The site features topography ranging from 20 to 40 metres, with an average depth of 30 metres. Access is by boat only, and divers should be prepared for cold water temperatures, which remain constant at 5-6°C below the thermocline. Visibility typically ranges between 5 and 10 metres. Due to the significant depth and potential for entanglement on sharp rocks, this site is suited for intermediate divers. Facilities including air fills, showers, and changing rooms are available nearby. Species recorded around this area include snail, common perch, burbot, barbel, American crayfish, chub, pike, rainbow trout, and bullhead.

Spiez Wallrain is a freshwater site located directly below Spiez Castle in Lake Thun. This reef and artificial reef site features a pebble-bottomed bay, providing an accessible environment for snorkelers. Entry is facilitated by secured steps leading directly into the water. The site offers depths ranging from 2 to 15 metres, with an average depth of 8 metres. Visibility at this location typically varies between 6 and 10 metres. The site is suitable for beginners and includes toilet facilities for visitors. A typical session lasts approximately 45 minutes.

Längenschachen in Lake Thun offers a gentle, sloping dive profile suitable for beginners. The underwater terrain transitions from stony to muddy, with seagrass beds extending to a depth of 5 metres. Divers typically reach depths between 2 and 15 metres, with an average of 10 metres. Access is via an easy shore entry located 50 metres from the parking area. Conditions feature mild currents and visibility ranging from 3 to 10 metres. The site is also popular with bathers during summer months, requiring awareness of boat traffic and surface activity. Facilities at the site include parking, a cafe, and toilets. Night diving is permitted at this location.

Churchillplatz is a freshwater shore dive located in Lake Thun, Switzerland. The site features a reef structure that descends from 20 to 40 metres. Divers should be prepared for limited visibility, which typically averages around 5 metres, requiring close-range navigation of the reef. The site is characterised by a lack of current, providing a controlled environment for those comfortable with deeper profiles. As facilities are not confirmed on-site, divers should arrive with all necessary equipment and a completed kit check. This location is accessible for diving throughout the year, though conditions remain consistent regardless of the season.

Churchill is a shore-entry dive site located in Lake Thun, Switzerland, featuring an artificial reef structure designed to attract freshwater life. The site is suitable for beginners, offering depths ranging from the surface down to 18 metres with mild currents. Visibility in this freshwater environment typically fluctuates between 6 and 20 metres. Divers should be prepared for cold water temperatures throughout the year, necessitating the use of a drysuit or a thick wetsuit. Due to the complex nature of the artificial reef, maintain awareness of potential entanglement risks during your dive. Parking is available on site for convenient access.

Frankenstein is a shore-entry dive site located in Lake Thun, Switzerland. The site features shallow, calm water that is well-suited for divers gaining experience or working on buoyancy control. As a shore dive, it offers straightforward logistics without the need for a boat. Conditions at this location are variable, with visibility and currents shifting frequently. Divers should confirm local conditions immediately prior to arrival and plan to be self-sufficient, as on-site facilities are not guaranteed. The site provides a quiet environment for practice in a freshwater lake setting.

Hilterfingen Hotel Bellevue is a shore-entry dive site in Lake Thun, Switzerland, offering a varied freshwater experience. Divers can explore an artificial reef structure and other submerged objects located between 10 and 20 metres, with an average depth of 12 metres. The site features a ramp for easy access and is suitable for beginners. Visibility typically ranges from 6 to 10 metres. Water temperatures fluctuate significantly, with a thermocline present; surface temperatures may exceed 20°C in summer, while deeper water remains cold at approximately 5 to 6°C. Divers should be aware of potential entanglement hazards and variable visibility conditions.

Gunten Bad in Lake Thun offers a distinct freshwater diving experience defined by dramatic underwater rock walls and canyons. Divers can expect depths ranging from 15 to 50 metres, with an average depth of 30 metres. The site is accessed via a shore entry and is suitable for intermediate divers. Conditions include mild currents and visibility typically between 5 and 15 metres. Water temperatures are cold, dropping to 4°C during winter months. The site supports night diving and features facilities including parking, toilets, and air fills. Divers should remain aware of the significant depth and potential for entanglement hazards during their 50-minute dives.