1,338 articles
Terceira Island
Terceira Island, Azores, Portugal: volcanic island, 403.4 km², highest point Serra de Santa Bárbara 1,021 m; home to Angra do Heroísmo, UNESCO World Heritage historic center since 1983.
Texada Island
Texada Island (Tla'amin: Si'yi yen) is the largest Gulf Island in the Strait of Georgia. It was a major early mining district known for copper and iron.
Thasos (Θάσος)
Thasos (Θάσος), also spelled Thassos, is the northernmost Greek island, off the Macedonian coast near Kavala. A Parian colony from the 7th century BC, it was famed for gold, silver, wine, and marble, and is reached by ferry from Keramoti or Kavala.
The Island of the Dolls
The Island of the Dolls (Isla de las Muñecas) is a chinampa on Laguna del Teshuilo in Xochimilco's canals, 28 km south of Mexico City, where caretaker Julián Santana Barrera hung hundreds of dolls over fifty years, legend says to appease a drowned girl's spirit.
The Lizard
The Lizard (Cornish An Lysardh) is Cornwall's southernmost peninsula, mainland Britain's southern tip, a serpentinite ophiolite plateau with Cornish heath heathland, Bronze Age sites, Marconi's 1901 wireless station and Goonhilly Earth Station.
The Sunken City
The Sunken City is the ruins of a 1920s Point Fermin, San Pedro neighborhood destroyed by a landslide beginning in 1929; ground moved up to 11 inches per day, the cliff retreated 64 m in ~70 years, and the fenced site may reopen.
The Thumb
The Thumb is the peninsula of Michigan's Lower Peninsula northeast of a Bay City to Port Huron line, bordered by Lake Huron, Saginaw Bay, and the St. Clair River; a glacial interlobate upland and farming region with Port Huron its largest city.
The Twelve Apostles (Victoria)
The Twelve Apostles are limestone sea stacks, 40–70 m tall, off Port Campbell on Victoria's Great Ocean Road, Australia. Formerly the Sow and Piglets, named in the 1920s with nine stacks; eight remain after the 2005 collapse.
The Watchkeeper
The Watchkeeper (also Flat Isle, Isla Flat, Islote Vigía) is a low off-shore rock island in the South Shetland Islands at 62°18'S 59°49'W, north of Table Island; named by sealers in 1821-1822 and renamed by the Discovery Investigations in 1934-35.
The World (جزر العالم) (archipelago)
The World (Juzur al-Ālam) is Nakheel's artificial archipelago of 260-300 islands shaped as a world map, 4 km off Dubai in the Persian Gulf, built from 320 million m³ of dredged sand by 2008 and developed since with The Heart of Europe resorts.
Thousand Islands
The Thousand Islands are 1,864 islands in the St. Lawrence River on the Ontario-New York border, formed on the granite Frontenac Axis by glacial scouring and post-glacial flooding; home to Thousand Islands National Park (est. 1904) and the UNESCO Frontenac Arch Biosphere Reserve.
Thousand Islands (Indonesia)
Kepulauan Seribu (Thousand Islands) is Jakarta's island regency in the Java Sea: 113 islands, 11 inhabited, 29,008 residents (2022), a marine national park, and reefs under urban pressure.
Thurston Island
Thurston Island, West Antarctica's third-largest island (about 220 km long), off the Eights Coast beside the Abbot Ice Shelf; determined an island by a 1940 Byrd flight; rocks record 349 Ma to 110–100 Ma Gondwana-margin magmatism.
Tidal flat
Tidal flat, also called mudflat or intertidal flat: a marsh, sandy, or muddy coastal flatland covered and uncovered by tides; at least 127,921 km² globally, rich in shorebirds, fisheries, and blue carbon.
Tidal island
Tidal island: land joined to the mainland or another island at low tide and cut off at high tide, via a bar, causeway, or road. Examples include Lindisfarne, St Michael's Mount, and Mont-Saint-Michel; Britain has 43 principal tidal islands.
Tierra del Fuego
Tierra del Fuego, the Land of Fire archipelago at South America's southern tip, split between Argentina and Chile since 1881, noted for its depauperate land fauna, Selk'nam and Yaghan peoples, and Ushuaia's Antarctic cruise hub.
Tikopia
Tikopia is a small Polynesian outlier island in eastern Solomon Islands, home to a Polynesian-speaking people and famously documented by anthropologist Sir Raymond Firth from 1928.
Timor
Timor is the easternmost Lesser Sunda island, split between Indonesian West Timor and Timor-Leste (eastern half, plus Oecussi, Atauro, Jaco). Geologically a young Banda Arc collision; Timor-Leste joined ASEAN 2025 as oil revenues end.
Tobago
Tobago, the smaller island of Trinidad and Tobago (also historically Bellaforma), lies 20 miles northeast of Trinidad, is dominated by the Main Ridge forest reserve, changed colonial hands repeatedly, and depends on tourism.
Tobira Jima
Tobira Jima (トビラ島) is a small 0.017 km² island off the Ichi settlement, Sumiyō-chō, Amami City, Kagoshima, Japan, at 28.2326°N 129.4456°E, known for a goddess legend and absence of habu snakes.
Tombolo
Tombolo: coastal landform, a sand or gravel bar connecting an island to the mainland or another island, formed by wave refraction and diffraction depositing sediment behind the island; examples include Chesil Beach and St. Ninian's Ayre.
Tonkin Island
Tonkin Island is a narrow, ice-capped island in Antarctica, rising to about 520 m above the Larsen Ice Shelf east of Cape Church on the Bowman Coast of Graham Land.
Torres Strait Islands
Torres Strait Islands: archipelago of over 270 islands and reefs between Cape York, Australia and Papua New Guinea; 17 inhabited; home of Torres Strait Islanders (Meriam Mir, Kala Lagaw Ya); severely threatened by sea level rise.
Tortola
Tortola is the largest island of the British Virgin Islands, hosting the capital Road Town; about 84% of the population lives there. Volcanic, with Mount Sage over 500 m, colonized by the Dutch from the 1610s and by Britain from 1672.
Tortuga
Tortuga (Île de la Tortue) is a Haitian island off northwest Hispaniola, the chief 17th-century French buccaneer stronghold from 1630 to 1700, with Fort de la Roche and Fort Blondel, later absorbed into Saint-Domingue.
Tower Island
Tower Island (Isla Torre) is an uninhabited Antarctic island, 9 km long and 305 m high, marking the northeast end of the Palmer Archipelago; named by Edward Bransfield on 30 January 1820.
Traill Ø
Traill Ø (Traill Island) is an uninhabited 3600 km² East Greenland island between Vega Sund and Kong Oscar Fjord, named by Scoresby in 1822 for Thomas Stewart Traill, later a Norwegian-Danish hunting ground and geological type area.
Treasure Island, San Francisco
Treasure Island is a 400-acre artificial island in San Francisco Bay, built in 1936 and 1937 for the Golden Gate International Exposition and later a Navy base.
Trinidad
Trinidad, the larger island of Trinidad and Tobago, is a continental Caribbean island 11 km off Venezuela, South American biota, transform-boundary geology, oil-based economy, and the region's highest biodiversity.
Trinity Island
Trinity Island, known in French as Île de la Trinité and Spanish as Isla Trinidad, is a 24 km-long island in the Palmer Archipelago off the Antarctic Peninsula.