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Arènes de Fréjus
Arènes de Fréjus: Roman amphitheatre of Forum Iulii (Fréjus, Var, France), built late 1st–early 2nd century AD, about 113 by 83 m, held 10,000–12,000 spectators; quarried in the Middle Ages, listed 1840, restored 2008–2012, still used for concerts.
Arènes de Lutèce
Arènes de Lutèce: Gallo-Roman mixed amphitheatre with stage in Paris's 5th arrondissement, 100 × 130.4 m, up to 17,000 seats, built before end of 1st century AD, rediscovered 1869, classified 1884.
Arènes de Nîmes
Arènes de Nîmes: Roman amphitheater in Nîmes, France, built c. 90–125 AD, 133 × 101 m, 60-arcade facade, over 20,000 seats; medieval fortress, cleared 1809, classified 1840.
Arequipa zoo
Zoomundo, or Zoo Mundo Arequipa, is a private zoo in Paucarpata, Arequipa, Peru, opened in 1998, holding roughly 270 to 300 mostly rescued wild animals in state custody, member of ALPZA.
Arganeraie Biosphere Reserve
Arganeraie Biosphere Reserve (Réserve de biosphère de l'Arganeraie), UNESCO MAB site designated 1998 in southwestern Morocco; 2,499,970 ha of endemic argan forest across Marrakech-Safi and Souss-Massa, home to about 3 million people and Amazigh Agdal and Tanast resource-management systems.
Argentorate
Argentorate, latinized Argentoratum, the Roman legionary camp and town founded around 12 BC on an island of the Rhine, Ill, and Bruche, origin of Strasbourg, garrisoned by Legio VIII Augusta from the 90s AD.
Arguenos
Arguenos (Arguénos) is an ancient marble quarry south of Aspet in the French Pyrenees, in Roman Gallia Aquitania, recorded at 42.97°N 0.72°E; its highly mylonitic marble was used locally in the Roman Imperial period but is unsuited to sculpture.
Argyroxiphium sandwicense subsp. macrocephalum
Haleakalā silversword (ʻāhinahina), Argyroxiphium sandwicense subsp. macrocephalum, an endangered Asteraceae rosette endemic to Haleakalā volcano, Maui, above 2,130 m; flowers once after 3–90 years, then dies.
Ari(o)lica
Ari(o)lica, recorded as Arilica and Arelica, was a Roman vicus, a small trading settlement, at the outflow of the Mincio from Lake Garda, identified with modern Peschiera del Garda.
Arianodum
Arianodum (probably a misspelling of Ariandum) is a road station of Cataonia in Cappadocia on the Tabula Peutingeriana, on the Comana–Samosata road, possibly named for the extinct Arienei tribe, candidate site near Kapı Deresi.
Arieldela
Arieldela is a Roman military site in Arabia, garrison of the Cohors II Galatarum, identified with 'Ayn Gharandal, Jordan, with a Late Roman quadriburgium and Tetrarchic bathhouse.
Aristonis
Aristonis (Greek Xeron, Xeron Pelagos) is a Roman road station and 44 x 33 m fort at Wadi Gerf in Egypt's Eastern Desert on the Coptos-Berenike road, used from the late 1st to mid-3rd century AD.
Arizona-Sonora Desert Museum
Arizona-Sonora Desert Museum: 98-acre Tucson fusion of zoo, botanical garden, natural history museum, aquarium, and art gallery founded in 1952 by William H. Carr, devoted solely to the Sonoran Desert.
Arjan Biosphere Reserve
The Arjan Biosphere Reserve, officially the Arjan and Parishan Biosphere Reserve, is a UNESCO reserve designated in 1976 in Fars province, south-western Iran, protecting the Zagros mountains and the Dasht-e Arjan and Parishan wetlands.
Ark Encounter
The Ark Encounter is a Christian theme park in Williamstown, Kentucky, run by Answers in Genesis, featuring a full-size Noah's Ark replica that opened in 2016.
Arles, Roman and Romanesque Monuments
Arles, Roman and Romanesque Monuments: UNESCO World Heritage property (inscribed 1981, criteria ii and iv) in Arles, France, covering 65 ha of Roman monuments (amphitheatre, theatre, cryptoporticus, Baths of Constantine) and Saint-Trophime's Romanesque church and cloister; 421 ha buffer zone added 2025.
Arlington Hotel (Hot Springs National Park)
Arlington Hotel (Arlington Resort Hotel & Spa), historic Hot Springs, Arkansas resort hotel: first opened 1875 as the state's largest hotel, rebuilt 1893, burned 1923, and the current George R. Mann Mediterranean Revival building completed 1924, with an in-house thermal bathhouse.
Arlington National Cemetery
Arlington National Cemetery, established June 15, 1864 on Robert E. Lee's seized estate, is the U.S. Army's largest national military cemetery: 639 acres, nearly 430,000 interments, Tomb of the Unknown Soldier, capacity crisis and Southern Expansion.
Arly Biosphere Reserve
Arly Biosphere Reserve, a UNESCO MAB site in south-eastern Burkina Faso nominated in 2018, covering 2,120,679 ha with 685,814 residents; part of the W-Arly-Pendjari transboundary complex with Benin and Niger, a stronghold for elephants, lions, and cheetahs.
Armenian Monastic Ensembles of Iran
The Armenian Monastic Ensembles of Iran is a UNESCO World Heritage Site in north-western Iran, inscribed in 2008, comprising St Thaddeus, St Stepanos, and the Chapel of Dzordzor.
Armira
Villa Armira (Вила Армира), a luxurious Roman suburban villa near Ivaylovgrad, Bulgaria, built in the late 1st century AD by a Thracian aristocrat; famed for its marble decoration, family-portrait and Medusa mosaics, and destruction in the Gothic war of 378.
Armorique UNESCO Global Geopark
Armorique UNESCO Global Geopark, in Finistère, Brittany, France, is a 2024 UNESCO Global Geopark of 1,587 km² and 47 municipalities managed by the Armorique Regional Nature Park, showcasing over 500 million years of geology from the Crozon cliffs to the Arrée Mountains.
Arnesp Roman villa, Valentine, Haute-Garonne
Arnesp Roman villa, Valentine, Haute-Garonne: large 4th-century Gallo-Roman villa near the Garonne, 15 km from Lugdunum Convenarum, with baths, mosaics, Nymfius epitaph, and a cult-funerary complex; classified monument historique 1979.
Arnières-sur-Iton
Arnières-sur-Iton (INSEE 27020) is a commune in the Eure, Normandy, southwest of Évreux, with 1,643 inhabitants in 2023, a Gallo-Roman theatre, a 2016 hoard of 186 sestertii, and the 15th-century church of Saint-Martin.
Aromatic Garden
Aromatic Garden (Aromagarten), Erlangen, Germany: 9,000 m2 university botanical garden of about 300 fragrant and aromatic plants, opened 1981, first garden named Aromagarten, free entry April-October.
Aromatic Plant Collection
Aromatic Plant Collection (百香园, Baixiang Yuan) is a spice-plant garden at the Xishuangbanna Tropical Botanical Garden, CAS, in Mengla County, Yunnan; 86 mu, over 104 spice species, China's largest living spice-plant gene bank.
Arrábida Biosphere Reserve
Arrábida Biosphere Reserve (Reserva da Biosfera da Arrábida), a UNESCO biosphere reserve designated 27 September 2025 in Hangzhou, covering 20,153 hectares of Palmela, Sesimbra, and Setúbal, Portugal's 13th such reserve.
Arran UNESCO Global Geopark
Arran UNESCO Global Geopark covers the Isle of Arran, Scotland, designated 17 April 2025 as the UK's 10th UNESCO Global Geopark. Known as Scotland in Miniature, it spans about 1,000 km², records 600 million years of geology, and centers on the Highland Boundary Fault and Hutton's Unconformity.
Arras-sur-Rhône Roman Milestone
Two Gallo-Roman milestones from Arras-sur-Rhône, Ardèche, dated c. 285/286 and c. 308/311, 2.45 m tall, marking roads of the civitas of Vienne; classified 1926, moved to Tournon-sur-Rhône in 1939.
Arrecife Alacranes Biosphere Reserve
Arrecife Alacranes Biosphere Reserve (Scorpion Reef), UNESCO MAB site 2006, protects the largest coral structure in the Gulf of Mexico, ~140 km off Yucatán, with five islands, 34 coral species, and a national park with no-take zones.