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Clavenna
Clavenna (Clauenna), the Roman name of Chiavenna in Sondrio, Lombardy: a Raetian road station on the Brigantia–Comum route in the Antonine Itinerary and Tabula Peutingeriana, controlling the Splügen, Maloja, and Septimer passes.
Clayoquot Sound Biosphere Reserve
Clayoquot Sound Biosphere Reserve, a UNESCO Man and the Biosphere site designated in 2000 on Vancouver Island, British Columbia, Canada, covering 349,947 ha of coastal temperate rainforest and ocean, governed locally by the Clayoquot Biosphere Trust.
Cleddans
Cleddans: Roman fortlet on the Antonine Wall, West Dunbartonshire, Scotland, near Cleddans Farm. Discovered by trial trenching 1979-80; 18 by 17.6 m, built before the Wall; one Roman mile from Duntocher fortlet.
Clelia Roman Villa
Villa Clelia (Clelia Roman Villa) is an archaeological area at Imola, Italy: the main necropolis of Roman Forum Cornelii with over 300 burials, a 5th-century basilica of San Cassiano, and the medieval Castrum Sancti Cassiani, destroyed by Imola in the 12th century.
Cleveland Botanical Gardens
Cleveland Botanical Garden, a ten-acre botanical garden and conservatory in University Circle, Cleveland, Ohio; founded 1930 as the Garden Center of Greater Cleveland, the country's oldest civic garden center; since 2014 part of Holden Forests & Gardens with the Holden Arboretum.
Cleveland Metroparks
Cleveland Metroparks is a park district in Northeast Ohio, established in 1917 as Ohio's first countywide park district, managing over 25,000 acres across 18 reservations, a zoo, and nine golf courses.
Cleveland Stadium
Cleveland Stadium, also known as Cleveland Municipal Stadium, was a lakefront stadium in Cleveland, Ohio, opened in 1931 as the world's largest outdoor arena and demolished in 1997.
Clickimin broch
Clickimin broch is an Iron Age stone round tower on Clickimin Loch in Lerwick, Shetland, surrounded by remains occupied from the Bronze Age into the Iron Age.
Cliff of Bandiagara (Land of the Dogons)
The Cliff of Bandiagara (Land of the Dogons) is a mixed UNESCO World Heritage site in Mali, inscribed 1989, a 150-km sandstone escarpment up to 500 m high sheltering 289 Dogon villages, Tellem cave dwellings, and living traditions now threatened by conflict.
Cliffs of Fundy UNESCO Global Geopark
Cliffs of Fundy UNESCO Global Geopark, on Nova Scotia's Bay of Fundy shore, designated July 2020; 254,600 ha, over 40 geosites, world's highest tides at 16 m, Canada's oldest dinosaur fossils, Mi'kmawey Debert site, 2023 yellow-card revalidation.
Clivus Scauri
Clivus Scauri, the ancient Roman street climbing the west slope of the Caelian Hill from near the Circus Maximus to the Arch of Dolabella and Silanus, preserved today as the Clivo di Scauro.
Clodiana
Clodiana, also Clodianis, Coladiana, Gloditana, was a Roman road station on the Via Egnatia in Albania, on the Shkumbin river near Peqin, equidistant from Apollonia and Dyrrachium, possibly named for Appius Claudius Centho.
Clodio
Clodio is the Pleiades gazetteer name (place 422897) for the so-called Villa of Clodius at the 13th mile of the Via Appia near Bovillae, traditionally attributed to Publius Clodius Pulcher and now reinterpreted as a Bona Dea sanctuary.
Cloghanmore
Cloghanmore, "the great stone heap", is a large Neolithic court tomb at Malin More, Glencolmcille, County Donegal, Ireland, with twin parallel galleries, a 46.3 m cairn, megalithic art, and an 1887 Board of Works restoration; distinct from a Cloghmore tomb in Tyrone.
Clos de Serre
Clos de Serre is a large Gallo-Roman villa site west of Caumont-sur-Durance in Vaucluse, southern France, best known for its Augustan-era ornamental garden and exceptionally long central basin.
Clostra (Romana)
Clostra (Romana), also Clostris (Greek Κλῶστρα), was a Roman road station on the Via Severiana on the Pontine coast of Latium, 9 miles from Astura and 15 from Circei, near Lago di Fogliano, named by Pliny the Elder.
Clove Garden
Clove Garden (丁香花园) is a historic 2.04-hectare garden estate at 849 Huashan Road, Xuhui District, Shanghai, traditionally linked to Li Hongzhang but documented as a 1938 renaming after Dingxiang cigarettes.
Clovelly Dykes
Clovelly Dykes: Iron Age multivallate hillfort near Clovelly, Devon, England; Scheduled Monument 1018522 on a coastal plateau overlooking Bideford Bay, with concentric ramparts up to 3 m high, dated 700 BC to 42 AD.
Clunia
Clunia (Colonia Clunia Sulpicia), Roman city on the Alto de Castro near Peñalba de Castro, Burgos, Spain; grew from the Arevacian settlement Clounioq, was a municipality under Tiberius, conventus capital, and Galba's 68 AD refuge, with a 10,000-seat theatre.
Cluster of 9 mausolea
Cluster of 9 mausolea is a Pleiades gazetteer record for nine mausolea south of Kherba Sidi el Ahmar, Algeria, cited to Barrington Atlas 29 G1 and indexed as a late antique cemetery.
Cluturnum
Cluturnum (Cluturno), a Roman road station in Samnium, Regio IV, near Aesernia, attested on the Tabula Peutingeriana between Esernie and Telesie; exact location undetermined, proposed near Cantalupo del Sannio.
Coastal and Marine Ecosystems of the Bijagós Archipelago – Omatí Minhô
Coastal and Marine Ecosystems of the Bijagós Archipelago – Omatí Minhô is a World Heritage Site in Guinea-Bissau, inscribed in 2025 and covering the best-preserved marine areas of Africa's only active deltaic archipelago.
Coastal Tower 16b (Old Mawbray)
Coastal Tower 16b (Old Mawbray), or Mawbray Sandpit tower 16b, a Roman sandstone watch tower on the Cumbrian coast frontier of Hadrian's Wall, scheduled monument 1014809, excavated by Bellhouse in 1954 and 1970.
Coastal world
Coastal world (Світ узбережжя, Мир побережья) is a semi-aquatic animal exposition zone of Kharkiv Zoo at 35 Sumska Street, with Humboldt penguins, planned polar bears, otters, and 2019–2022 pool construction.
Coatetelco
Coatetelco, an INAH archaeological zone in Miacatlán, Morelos, Mexico, on Lake Coatetelco near Xochicalco; Nahuatl 'place of serpents on stone mounds'; occupied 500 BC–1500 AD with Templo Mayor, ballcourt, and tzompantli.
Coatzacoalcos (protected area)
Coatzacoalcos (protected area): conservation designation for the Río Coatzacoalcos basin in Veracruz and Oaxaca, Mexico; FEOW freshwater ecoregion #172, CONABIO priority regions 81 and 52, and Veracruz's POER, with ~10% endemic fish and an endangered status.
Coba
Coba (Cobá), a major Classic Maya city in northern Quintana Roo, Mexico, built around lakes, with 45 sacbeob roads, the 42 m Nohoch Mul pyramid, stelae dated 613–780 CE, and 14 identified rulers; rival of Chichén Itzá.
Cobourg Peninsula (protected area)
Cobourg Peninsula (protected area): Northern Territory peninsula, Ramsar site no. 1, the world's first Wetland of International Importance, designated 8 May 1974; 220,700 ha within Garig Gunak Barlu National Park, jointly managed with the Arrarrkbi Traditional Owners.
Cocciano
Cocciano, a quarter of Frascati in the Castelli Romani near Rome, is the site of the Parco Archeologico di Cocciano, a Roman imperial villa attributed to Tiberius and linked to Livia Drusilla, with vaulted substructions, opus sectile floors, and ongoing excavations.
Coche
Coche: Spanish for car; also a 16th-century horse-drawn passenger coach from Kocs, Hungary; Isla de Coche (55 km², Nueva Esparta, Venezuela); a Caracas parish; and a casino in Beirut.