Sem, Akershus

Semsvannet is a lake in Asker municipality in Akershus county, southwest of Oslo, in Norway. The lake is situated close to, for the Norwegians, famous places such as the ridge Skaugumsåsen, the old cultural house Tangen and Skaugum the official residence of the heir to the throne of Norway, i.e. the crown prince or princess of Norway. The status of Semsvannet as a nature reserve was upgraded when the area was protected as a conservation area October 2, 1992. The lake and its vicinity was elected a millennium site in the year 2000.

Føyka Stadion (also called Asker Stadion) is a sports stadium in Asker, Norway with running track. It is currently used mostly for association football matches, and is the home ground of Asker Fotball. The stadium has a capacity of 2,000.

Asker (Norwegian: Asker), also called Asker proper (Askerbygda or gamle Asker in Norwegian), is a district and former municipality in Akershus, Norway. From 2020 it is part of the larger administrative municipality Asker (also known as Greater Asker) together with the traditional Buskerud districts Røyken and Hurum; Asker proper constitutes the northern fourth and is part of the Greater Oslo Region. The administrative centre was the town of Asker, which remains so for the new larger municipality. Asker was established as a parish in the Middle Ages and as a municipality on 1 January 1838.

Asker Municipality, informally referred to as Greater Asker (Norwegian: Stor-Asker), is a municipality in Akershus county, Norway, that was established in 2020 by the merger of Asker in Akershus and Røyken and Hurum in Buskerud county. Asker proper (also called Askerbygda) constitutes the northern fourth of the municipality, while Røyken and Hurum constitute the southern three quarters. It is part of the Greater Oslo Region. The administrative centre of the municipality is the town of Asker.

Skaugum is an estate, manor house and the official residence of Crown Prince Haakon of Norway and his wife Crown Princess Mette-Marit. The estate is located in Asker, 19 km (12 mi) southwest of Oslo, by the foot of the mountain Skaugumsåsen. The estate consists of 48 ha (120 acres) of agricultural lands and 50 ha (120 acres) of woodlands.

The Skaugum Tunnel (Norwegian: Skaugumtunnelen) is a 3,790-meter (2 mi) long railway tunnel in Asker, Norway, on the Asker Line. The tunnel runs between Asker Station and Solstad and was built as part of the first stage of the Asker Line, between Asker and Sandvika. Construction started in February 2002 and the tunnel opened on 27 August 2005. The tunnel was built by Mika for the Norwegian National Rail Administration using the drilling and blasting method with one crosscut. During construction there was one blasting accident. Since the tunnel opened, there have been problems with leaks damaging the infrastructure. The tunnel has double track, is electrified and allows for a maximum speed of 160 kilometers per hour (99 mph). The cost to build the tunnel, excluding the infrastructure, was 450 million Norwegian krone (NOK). The tunnel has accelerated intercity and regional traffic west of Oslo and freed up capacity for the Oslo Commuter Rail on the old Drammen Line.

Asker Station (Norwegian: Asker stasjon) is a railway station located in downtown Asker, Norway. Situated on the Drammen Line, 23.83 kilometers (14.81 mi) from Oslo Central Station, it also serves as the terminus of the Asker Line and the Spikkestad Line. The station is located just southwest of the Asker Tunnel and the Skaugum Tunnel, and just northeast the Lieråsen Tunnel. Vy serves the station with local, regional and intercity trains. It is also served by the Airport Express Train and serves as the main bus terminal for the town. The station has six tracks and four platforms, consisting of two island platforms and two side platforms. The station had 8,400 daily passengers in 2008. The station opened along with the Drammen Line on 7 October 1872. The original station building was designed by Georg Andreas Bull in Swiss chalet style. The station underwent a renewal from 1917 to 1922, receiving gauge conversion to standard gauge, electrification and a new station building designed by Ragnvald Utne. Double track was laid from 1955 to 1958, including building the Asker Tunnel just northeast of the station, and a new station building opened in 1960. The Lieråsen Tunnel opened in 1973, cutting the distance to Drammen, and resulted in the old line becoming the Spikkestad Line. The station received an overhaul in 1998 and again in 2006. The latter was in conjunction with the construction of the Asker Line.

The Asker International School (AIS) is an international school in Asker, Norway.

Skaugumsåsen is a mountain in Asker in the county of Akershus, in southeastern Norway.

Asker Upper Secondary School (Norwegian: Asker videregående skole) is an upper secondary school in Asker, Norway. Founded in 1955, it has 680 students aged 16–19, as of 2018. The school only offers a general academics program, after the sports program got moved to Bleiker Upper Secondary School (Norwegian: Bleiker videregående skole)

The Subsea Valley(SSV) geographically consists of Fornebu, Sandvika, Asker, Tranby, Drammen, Hokksund and Kongsberg, totaling approximately 75 km in length. The SSV consists of 184 firms and currently incorporates three of the five major subsea engineering companies that compete in the industry. The major engineering companies within the SV are FMC Technologies, Aker Solutions and GE Vetco. With regard to subsea production systems, Norwegian suppliers have gained global market shares in the range of 60-70%, and companies such as FMC Technologies, Aker Solutions and GE are truly global players within this segment. The competitors located outside the cluster are Cameron and DrillQuip. In a recent report by TESS it is stated that in addition to the companies, which are present in the SSV area, as many as 600 companies are in one or another way connected to the valley. The three central companies in Subsea Valley – FMC Technologies, Aker Solutions and GE Vetco – are supplying oil & gas extraction equipment to such hydrocarbon operators as Statoil, Exxon and Petrobras.

Drengsrud is a village in Asker municipality, Akershus county, Norway.