Rethen (Leine)

Gleidingen is a part of the town of Laatzen in the district of Hanover, in Lower Saxony, Germany. It is situated south of both Hanover and the center of Laatzen.

ZAG-Arena (formerly Preussag Arena and TUI Arena) is an arena in Hanover, Germany. The arena opened in 2000 and holds 10,767, during hockey or handball matches and up to 14,000, during concerts. It is the biggest indoor-venue in the Hanover Region and most major concerts are held there. The arena is situated at the Expo Plaza in the Expo 2000 grounds, in the south of Hanover, astride the Kronsberg and Mittelfeld areas.

The Innerste is a river in Lower Saxony, Germany. It is a right tributary of the Leine river and 101 km (63 mi) in length.

Laatzen is a town in the district of Hanover, in Lower Saxony, Germany. It is situated directly south of Hanover.

Convention Camp is a conference on digital future, social media and web culture. It takes place annually since 2008 at Hanover fairground and is the largest BarCamp in Germany.

Kronsberg is a hill about six kilometres in length and dominates the surrounding areas up to 30 meters, just outside Hanover. The highest point on the Kronsberg is the scenic hill with 118 meters (387 ft). The only taller hill in the city is the "Monte Müllo" landfill site, standing at 122 metres (400 ft). It mainly consists of marl.

GEO600 is a gravitational wave detector located near Sarstedt, a town 20 km to the south of Hanover, Germany. It is designed and operated by scientists from the Max Planck Institute for Gravitational Physics, Max Planck Institute of Quantum Optics and the Leibniz Universität Hannover, along with University of Glasgow, University of Birmingham and Cardiff University in the United Kingdom, and is funded by the Max Planck Society and the Science and Technology Facilities Council (STFC). GEO600 is capable of detecting gravitational waves in the frequency range 50 Hz to 1.5 kHz, and is part of a worldwide network of gravitational wave detectors. This instrument, and its sister interferometric detectors, when operational, are some of the most sensitive gravitational wave detectors ever designed. They are designed to detect relative changes in distance of the order of 10−21, about the size of a single atom compared to the distance from the Sun to the Earth. Construction on the project began in 1995.In March 2020 the COVID-19 pandemic forced the suspension of operation of other gravitational wave observatories such as LIGO and Virgo (and in April 2020, KAGRA) but GEO600 continued operations.As of 2023, GEO600 is active in its gravitational wave observation operations.

The Hannover Messe (HM; "Hanover Fair") is one of the world's largest trade fairs, dedicated to the topic of industry development. It is organized by Deutsche Messe AG and held on the Hanover Fairground in Hanover, Germany. Typically, there are about 6,500 exhibitors and 250,000 visitors. The Hannover Messe started in 1947 in an undamaged factory building in Laatzen, south of Hanover, by an arrangement of the British military government in order to boost the economic advancement of post-war Germany. The first fair was colloquially known as Fischbrötchenmesse (Fischbrötchen fair) due to the exemptions in food rationing for the fair at this time. It proved hugely successful and was thence repeated on a yearly basis, contributing largely to the success of the Hanover fairground in replacing the then-East German city of Leipzig as the new major fair city for West Germany. The product portfolio includes building automation and technology, coating materials, air compressors, gas compressors, environmental technology, factory equipment, compressed air technology, micro-actuator systems, motors, scheduling software, refrigeration technology, robotics and additive manufacturing systems.In the 1980s, the growing information and telecommunication industry demanded the organizer Deutsche Messe AG to split the fair. CeBIT was a successful spin-off of the Hannover Messe. The Hanover Fair now covers all areas of industrial technology. The most recent Hanover Fair took place in May 30 to June 2, 2022, with Portugal as the partner country.

CeBIT was the largest and most internationally representative computer expo. The trade fair was held each year on the Hanover fairground, the world's largest fairground, in Hanover, Germany. In its day, it was considered a barometer of current trends and a measure of the state of the art in information technology. It was organized by Deutsche Messe AG.With an exhibition area of roughly 450,000 m2 (4.8 million sq ft) and a peak attendance of 850,000 visitors during the dot-com boom, it was larger both in area and attendance than its Asian counterpart COMPUTEX and its no-longer held American equivalent COMDEX. CeBIT is a German language acronym for Centrum für Büroautomation, Informationstechnologie und Telekommunikation, which translates as "Center for Office Automation, Information Technology and Telecommunication". The final CeBIT took place from 11 to 15 June 2018.

The Hanover Fairground (in German: Messegelände Hannover) is an exhibition area in the Mittelfeld district of Hanover, Germany. Featuring 392,453 m² (4.2 million sq.ft.) of covered indoor space, 58,000 m² (624,306 sq ft) of open-air space, 24 halls and pavilions, and a convention center with 35 function rooms, it is the largest exhibition ground in the world.

Hannover Messe/Laatzen station is a Category 4 station in the German town of Laatzen near the Hanover fairground (German: Messegelände Hannover). It is normally served only by the Hanover S-Bahn. During major events such as CeBIT and Hanover Messe, all passing regional and long distance trains stop at the station. The station opened in 2000, replacing the old Messe station, which was located on a spur line in the fairgrounds.

The Mannesmann Tower was a tower on the Hanover fairground in Hanover, Germany. It was a free-standing lattice tower with a triangular cross-section, standing 120 metres (390 ft) high and carried the logo of the Hanover Fair, which erected the tower in 1954, at a height of 89.8 metres (295 ft). The Mannesmann Tower hosted aerials for mobile phone services. It was demolished on 21 June 2012 due to its poor condition.