Action at Mannheim (1795)

The Battle of Seckenheim (June 1462) saw the army of the Electoral Palatinate led by Frederick I, Elector Palatine and his ally Dieter von Isenburg face an invading army led by Charles I, Margrave of Baden-Baden, Ulrich V, Count of Württemberg, Louis I, Count Palatine of Zweibrücken, and George of Baden, the Bishop of Metz. Without warning, Frederick suddenly struck at the invaders, trapping them in the fork of two major rivers. Though about 300 knights cut their way out, causing many non-combatant casualties, the Palatine forces were victorious. Frederick captured three of the enemy leaders and wrung ransoms and territorial concessions from them. Seckenheim is now part of the city of Mannheim in the state of Baden-Württemberg, Germany. The combat occurred during the Mainz Feud (Mainzer Stiftsfehde), part of the larger Bavarian War (1459–63).

On 31 May 2024 at 11:34 am, in the market square in Mannheim, Baden-Württemberg, Germany, a man ambushed and wounded several people, including controversial activist Michael Stürzenberger at a rally hosted by the far-right group Citizens' Movement Pax Europa (BPE) with Stürzenberger as the main speaker. Six people were injured, including Stürzenberger; a police officer who was stabbed in the neck would succumb to his injuries two days later. The attack was stopped when the suspect was injuriously shot by another police officer. Investigators suspect that the suspect's motive was Islamist in nature.

St. Sebastian is the oldest Catholic parish church in the city of Mannheim and one of the three churches of the Mannheim city pastoral unit in the city center. In Electoral Palatine times it was used by the Elector as a court church and received a magnificent interior by artists such as Bibiena, Verschaffelt and Egell. The furnishings were impaired by remodeling in the 19th century and damaged during World War II. Together with the Old Town Hall, St. Sebastian's Church forms a Baroque double building erected at the beginning of the 18th century, which is the oldest preserved structure in the city.

The Leibniz Institute for the German Language (IDS; German: Leibniz-Institut für Deutsche Sprache) in Mannheim, Germany, is a linguistic and social research institute and a member of the Leibniz Association. Under the leadership of Prof. Dr. Henning Lobin, director of the institute, and Prof. Dr. Arnulf Deppermann, vice director of the institute, IDS employs a staff of about 160. The IDS was established in Mannheim in 1964 and is still headquartered there. It is the central extramural institute for research and documentation of the German language in its contemporary usage and its recent history. As a member of the Leibniz-Gemeinschaft (Leibniz-Association), the IDS is financed both by the federal government and by the state of Baden-Wuerttemberg.

Kapuzinerplanken is a part of the street Kunststrasse in Mannheim, Germany. It is used only by pedestrians. The Kapuzinerplanken runs parallel to the large planks, the part of the Mannheimer pedestrian precinct, which leads from the water tower to parade square. From 1701 to 1839/40 there had been a monastery, a Kapuzinerkloster, on the road.

Mannheim (German pronunciation: [ˈmanhaɪm] ; Palatine German: Mannem or Monnem), officially the University City of Mannheim (German: Universitätsstadt Mannheim), is the second-largest city in the German state of Baden-Württemberg, after the state capital of Stuttgart, and Germany's 21st-largest city, with a 2021 population of 311,831 inhabitants. The city is the cultural and economic centre of the Rhine-Neckar Metropolitan Region, Germany's seventh-largest metropolitan region with nearly 2.4 million inhabitants and over 900,000 employees.Mannheim is located at the confluence of the Rhine and the Neckar in the Kurpfalz (Electoral Palatinate) region of northwestern Baden-Württemberg. The city lies in the Upper Rhine Plain, Germany's warmest region. Together with Hamburg, Mannheim is the only German city bordering two other federal states. It forms a continuous conurbation of around 480,000 inhabitants with Ludwigshafen am Rhein in the neighbouring state of Rhineland-Palatinate, on the other side of the Rhine. Some northern suburbs of Mannheim belong to Hesse. Upstream along the Neckar lies Heidelberg, the fifth-largest city of Baden-Württemberg and the third-largest of the Rhine-Neckar Region. Mannheim is unusual among German cities in that its city centre streets and avenues are laid out in a grid pattern, leading to the city's nickname Quadratestadt (Square City). Within a ring of avenues surrounding the city centre, there are squares, numbered from A1 to U6, instead of street names. At the southern base of that system is Mannheim Palace, one of the largest palace complexes in the world, and the second-largest in Baroque style after Versailles. It was the former home of the Prince-elector of the Electoral Palatinate, and now houses the University of Mannheim, which repeatedly receives top marks in business administration and is sometimes known as the "Harvard of Germany". The Mannheim May Market is the largest regional consumer exhibition of Germany. The civic symbol of Mannheim is the Romanesque Mannheim Water Tower, completed in 1886 and rising to 60 metres (200 feet) above the highest point of the art nouveau area Friedrichsplatz. Mannheim is well-known for its inventions, including the automobile, the bicycle, and the tractor, which is why the city is often called the "city of inventions". The city is the starting and finishing point of the Bertha Benz Memorial Route, which follows the tracks of the first long-distance automobile trip in history. A Großstadt (major city with more than 100,000 inhabitants) since 1896, Mannheim is now an important industrial and commercial city, a university town, and a major transportation hub between Frankfurt and Stuttgart, including an ICE interchange (the Mannheim Hauptbahnhof), Germany's second-largest marshalling yard (the Mannheim Rangierbahnhof), and Germany's largest inland port (the Mannheim Harbour). The city is home to many factories, offices and headquarters of several major corporations such as Roche, ABB, IBM, Siemens, Unilever and more. Mannheim's SAP Arena is home to German ice hockey record champions Adler Mannheim as well as the popular handball team Rhein-Neckar Löwen. Since 2014, Mannheim has been a member of the UNESCO Creative Cities Network and holds the title of "UNESCO City of Music". In 2020, Mannheim was classified as a global city with 'Sufficiency' status by the Globalization and World Cities Research Network (GaWC). Mannheim is a smart city; the city's electrical grid is installed with a power-line communication network. The city's tourism slogan is "Leben im Quadrat" ("Life in the Square").

The Staatliche Hochschule für Musik und Darstellende Kunst Mannheim is a Hochschule, a university for music and performing arts in Mannheim, Germany, of the state Baden-Württemberg

The Capture of Mannheim was undertaken on 2 November 1622 by the Imperial-Spanish army commanded by Johan Tzerclaes, Count of Tilly against the Protestant troops under the Englishman Sir Horace Vere during the Thirty Years' War.

The University of Mannheim Business School (UMBS) is among the oldest and most prestigious of the five schools comprising the University of Mannheim, located in Mannheim, Baden-Württemberg, Germany. The Business School, established in 1963, has its origins in the Handelsschule and covers the fields of Business Administration, Finance, Marketing, Accounting, Operations Research, Strategic Management and Corporate Law. The University of Mannheim Business School should not be confused with the Mannheim Business School, which is the umbrella organization for management education at the University of Mannheim. As the first German institution, the Business School of the University of Mannheim has gained the "Triple Crown" (Triple accreditation): It is accredited by AACSB International, the Association of MBAs (AMBA) and EFMD (EQUIS). With 37 chaired professors and about 4,000 students, the Business School ranks among the largest in Europe.

The GESIS – Leibniz Institute for the Social Sciences is the largest German infrastructure institute for the social sciences. It is headquartered in Mannheim, with a location in Cologne. With basic research-based services and consulting covering all levels of the scientific process, GESIS supports researchers in the social sciences. As of 2017, the president of GESIS is Christof Wolf. GESIS is part of the Leibniz Association and receives federal and state funding.

The Reiss Engelhorn Museum, or Reiss-Engelhorn-Museen (rem for short), is a museum in Mannheim, Germany. It has an exhibition area of 11,300 square metres (122,000 sq ft), and houses around 1.2 million objects.

The Angel of Peace in Mannheim is a memorial for the victims of Nazi Germany and the Second World War, which was created in 1951/52 by the sculptor Gerhard Marcks. The statues other names are Mannheimer Engel and Angel of Death; the locals call the sculpture Die schepp' Liesel (The crooked Liesel).