All articles starting with O
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Obelisk of Theodosius
The Obelisk of Theodosius, also known as the Obelisk of Thutmose III, is a red granite obelisk cut at Karnak in the 15th century BC and re-erected in Constantinople's Hippodrome in AD 390.
Obelisk ship
An obelisk ship was a specialized flat-bottomed barge built in New Kingdom Egypt to carry granite obelisks from the Aswan quarries down the Nile to Thebes.
Obelisks of Aksum
The Obelisks of Aksum, also called the Aksum stelae, are carved stone stelae erected in Aksum, Ethiopia, in the 3rd and 4th centuries AD as tomb markers.
Obelisks of Nectanebo II
The Obelisks of Nectanebo II are a pair of small black siltstone obelisks made under pharaoh Nectanebo II around 350 BC, now in the British Museum.
Obelix
Obelix (Obélix) is the huge, superhumanly strong Gaul of the Asterix comics created by Goscinny and Uderzo in 1959 for Pilote, permanently strong from a childhood magic-potion fall, fond of boars and menhirs, owner of Dogmatix.
Obelus
Obelus (Greek ὀβελός): the mark ÷, the division sign, and historically a manuscript critical sign marking doubtful text, used by Aristarchus and Origen; first used for division by Johann Rahn in 1659.
Oben-Geregu Gas Pipeline
The Oben-Geregu Gas Pipeline is a natural gas pipeline in Nigeria, completed in 2011, carrying gas from Edo State to the Geregu power plants in Kogi State.
Ober grafendorf
Ober-Grafendorf is a municipality in Lower Austria whose organized sports run through several clubs, most prominently the football club FC STYX Ober-Grafendorf, the multi-sport ESV Ober-Grafendorf, and SPORTUNION Obergrafendorf.
Ober Ost
Ober Ost (Oberbefehlshaber Ost) was Germany's WWI military occupation regime over Lithuania, Courland, Belarus, and Polish borderlands from 1915, run by Hindenburg and Ludendorff as an autonomous military state until November 1918.
Oberaden
Oberaden (Römerlager Oberaden), Roman legionary fortress at Bergkamen-Oberaden, Westphalia, Germany; built 11 BCE in Drusus's Germanic wars, 56 ha, two legions, timber-and-earth wall, abandoned 8/7 BCE; identified with Cassius Dio's Lippe-Eliso stronghold.
Oberammergau Passion Play
The Oberammergau Passion Play (Oberammergauer Passionsspiel) is a Passion play performed by residents of Oberammergau, Bavaria, roughly every ten years since 1634 under a plague vow.
Oberdorla
Oberdorla is a village in the Thuringian Basin near Mühlhausen, Germany, lying at the geographic center of the country and known for its ancient sacrificial bog.
Oberentfelden
Oberentfelden (Endiveld, 965) is a municipality in the Aarau district, canton Aargau, Switzerland, in the lower Suhre valley; 9,107 residents in 2025, Roman villa rustica, Bernese rule 1415-1798, Walther brush factory heritage.
Oberflorstadt
Oberflorstadt (Ober-Florstadt), Hesse, Germany: village in Florstadt, Wetteraukreis, site of Roman cohort fort (Kastell Ober-Florstadt) on the Wetterau line of the Upper German-Raetian Limes, 2.8 ha, garrisoned by Cohors XXXII voluntariorum, with vicus, bath, and Mithraeum.
Obergefell v. Hodges
Obergefell v. Hodges, formerly Obergefell v. Wymyslo, is the June 2015 US Supreme Court decision, 5 to 4, requiring states to allow and recognize same-sex marriage.
Obergruppenführer
Obergruppenführer (Ogruf, "senior group leader") was a senior Nazi paramilitary general rank adopted by the SS in 1933, its highest general grade until April 1942, equivalent to lieutenant general, and the typical rank of Higher SS and Police Leaders.
Oberhausen
Oberhausen (SC Rot-Weiß Oberhausen-Rhld. 1904 e.V., RWO) is a German football club founded 1904, playing at Stadion Niederrhein; four Bundesliga seasons 1969-73, now Regionalliga West.
Oberhochstatt
Oberhochstatt is the site of a small Roman fort of the Raetian Limes near Weißenburg in Bavaria, Germany, known mainly through aerial photography and magnetometry.
Oberiu
Oberiu (ОБЭРИУ, the Union of Real Art) was a Russian literary and theatrical group active in Leningrad from 1927 to the early 1930s, whose core poets were Daniil Kharms, Alexander Vvedensky, and Nikolai Zabolotsky.
Oberkommando der Marine
Oberkommando der Marine (OKM): German naval high command; Kaiserliches Oberkommando der Marine (Imperial era) and Oberkommando der Kriegsmarine (1936–1945), led by Raeder, Dönitz, and von Friedeburg.
Oberkommando der Wehrmacht
The Oberkommando der Wehrmacht (OKW, "High Command of the Armed Forces") was the supreme command organization of the German armed forces from 1938 to 1945, created by Hitler.
Oberlausitz
Oberlausitz, also known as Upper Lusatia (Upper Sorbian: Hornja Łužica), is a historical region in eastern Saxony on the upper Spree, known for its Sorbian minority of about 40,000 people.
Oberleiserberg
Oberleiserberg (Oberleiser Berg), a 457 m hill near Ernstbrunn in Lower Austria's Weinviertel, is a multi-period archaeological site: Early Bronze Age Aunjetitz hillfort, Urnfield and Celtic La Tene settlements, and a 4th-5th century Suebian royal residence with Roman-style stone buildings.
Oberlienz
Oberlienz, a municipality in Lienz District, Tyrol, Austria, northwest of Lienz at the Iseltal entrance; 1,487 inhabitants, villages Oberlienz, Oberdrum, Glanz; Roman villa rustica at Lesendorf, 1809 church fire, Helenenkirchl.
Oberliga nordost (germany oberliga nordost, 5.nordost.s)
Oberliga Nordost (NOFV-Oberliga), northeastern German football league founded 1991 after reunification as DDR-Oberliga successor; third tier 1991-94, fifth tier since 2008, two Staffeln Nord and Süd run by the NOFV.
Oberliga rheinland pfalz/saar
Oberliga Rheinland-Pfalz/Saar, a German men's football Oberliga founded in 1978 for Rhineland-Palatinate and Saarland clubs, run by FRV Südwest, feeding the Regionalliga Südwest; TSV Schott Mainz took the 2024/25 title with 91 points.
Oberlin College
Oberlin College, founded 1833 in Oberlin, Ohio as the Oberlin Collegiate Institute, is a private liberal arts college and conservatory of music; first US college to adopt a policy admitting Black students (1835) and to grant bachelor's degrees to women in a coeducational program (1841).
Obermeyer (brewery)
Obermeyer & Liebmann, also known as the Havana Brewery, was a Brooklyn lager brewery founded in 1868 in Bushwick by David Obermeyer and Joseph Liebmann.
Obernburg
Obernburg am Main, a Bavarian town of about 8,800 in Miltenberg district, stands on a Roman Main Limes cohort fort (Nemaninga, Cohors IIII Aquitanorum) with a beneficiarius station; a town since 1313 under Mainz, UNESCO Limes World Heritage since 2005.
Oberon
Oberon (Uranus IV) is Uranus' outermost and second-largest moon, discovered by William Herschel in 1787, named for the fairy king in A Midsummer Night's Dream, roughly half ice and half rock, heavily cratered, and imaged up close only by Voyager 2 in 1986.