General information
A compilation of various websites containing information on aspects related to monumental and unique trees from all over the world. This means that, unfortunately, this criterion inevitably excludes other information of great interest in this field which is not available on a website.
Catalonia
ARRELATS és el nom de la iniciativa mediambiental, històrica i literària impulsada per l’Ajuntament de Vimbodí i Poblet, que es configura a l’entorn d’una quinzena d’arbres emblemàtics del terme municipal. La informació de cada arbre es complementa amb un relat literari de l’escriptora Teresa Duch.
Information on the heritage trees at Masjoan farmhouse in Espinelves. The arboretum contains mostly conifers, many over 40m high, originally planted between 1860 and 1911 by the owner of the farmhouse.
Information on some heritage trees of Berguedà County, notably the Pi de les Tres Branques (three-branched pine), one of the most popular and venerated trees in Catalonia.
List of the protected heritage trees in Catalonia. The website of the Government of Catalonia, provides access to the list of heritage trees in Catalonia classified by regions and towns, to the list of trees of regional and local interest, and to the specific legislation on this subject.
Web of Girona City Hall Municipal Unit of Territorial Analysis, where the city's listed trees are identified and located on a map.
Web inventory of trees of local and not protected interest of the Alt Emporda county, created by the Institució Alt Empordanesa per a l'Estudi i Defensa de la Natura (IAEDEN).
Barcelona City Council's Department of Parks and Gardens inventory of trees of local interest in the city, grouped by district
L'Ametlla del Vallès Heritage and Historical Resource Centre website, with an inventory of trees of local interest in the municipal area.
Mollet del Vallès Town Council inventory of listed trees of outstanding or botanical interest in the town.
Europe
Information on different subjects related to arboriculture and the outstanding heritage trees of Turkey and other European and Asian countries.
Web page jointly promoted by the Ancient Tree Forum and the Woodland Trust, a non-profit organisation that promotes the conservation of the natural heritage. The two organisations have joined forces in this very complete web page that allows users to access almost all the information on trees and their conservation that is available in the United Kingdom.
Images of some of the most remarkable trees of interest of Germany. Also has a link to the photographs of Jürgen Hüfner.
Web page in English by Tomasz Niechoda that provides a wide range of information on outstanding heritage trees in Poland.
List of the outstanding heritage trees of Belgium. Contains many photographs.
France
Information web page listing the most exceptional trees of the Burgundy region in France. Also provides information on the state of these trees.
Information web page of l'Office National des Forêts, containing the most exceptional trees of the French woods.
Information web page that also divulges the projects of Arbres Remarquables Bilan Recherche Etudes et Sauvegarde (ARBRES, Association for the evaluation, research, study and protection of exceptional trees). Contains many excellent photographs.
Germany
Catalogue of outstanding heritage trees of Germany. Contains many photographs.
Italy
Database showing the outstanding heritage trees of Italy. Classified by provinces.
Poland
Poland Natural Park website mainly created to preserve the monumental and symbolic oaks of the valley of Warta.
United Kingdom
Guide to the native trees of the British Isles managed by The Woodland Trust. Users can access the Trust's magazine, booklist and selection of images and much additional information.
Web page listing the most outstanding trees of the British Isles and Ireland. There are currently more than 125,000 entries.
International
Very educational site, dedicated to the world of trees, with a page on record-holding trees the world over.
International project by the ecologist association Terra, that aims to focus attention on the world's most exceptional trees (see also Superárboles del mundo, above).
Information in English and French on the most outstanding heritage trees of the planet. Excellent selection of photos and many recommended links.
Australia
Historical photographs of great interest of the tallest trees of Victoria.
Reference website containing impressive photographs of the tallest trees of Tasmania (mostly Eucalyptus).
Canada
Shows the many trees on the Salt Spring islands in Canada. There is a large selection of images and descriptions of the most outstanding specimens.
International
An interactive map enabling visitors to go on a virtual journey round the world and see the most exceptional trees. Impressive photographs and panoramic views.
Compilation of information on the most outstanding trees of the planet. Includes classifications by main characteristics (highest, oldest, etc.) and other sections containing interesting information, seed-exchanges, discussion forums etc.
United States
The state of Alabama's list of its 100 most outstanding trees.
Website of the agricultural science institute of the University of Florida, which demonstrates the need to conserve centuries-old trees, especially the different kinds of cypress, a tree that is essential to the wetlands of this state.
Access to information on the oldest North-American trees.
Information on the most emblematic woods and trees of California. Large selection of photographs and links section for further study or visits to the most outstanding trees, such as those of Redwood National Park.
A list of the outstanding heritage trees and of all the species of trees that live in the United States. On the American Forests Organisation website.
Shows a journey along the Pacific coast to find the highest, biggest and oldest trees.
Spain
Information source of the association Cuervo Blanco on subjects such as ecology, sustainable energy, natural parks, botanical gardens and arboretums, biosphere reserves and outstanding heritage trees. Excellent links section.
Public information on the process for listing the outstanding heritage trees of the autonomous region of la Rioja.
The association Rincones del Atlántico provides a brief list of the most outstanding trees of the Canary Islands.
Information on the heritage trees of the autonomous region of Extremadura. Can be accessed through the region's network of protected natural areas.
List of the heritage trees of the autonomous region of Asturias provided by the natural areas network la Red de Espacios Naturales de Asturias.
The Environment Department website of the Autonomous Government of Andalusia has carefully compiled an extensive inventory of trees and groves in Andalusia, grouped by province. The characteristics of each tree and grove are given here, together with a direct link to Google Maps and Google Earth.
List of the exceptional trees of the autonomous region of Cantabria classified by species and localities.
Portal of the association Verdegaia, which aims to increase people's appreciation of nature and promote ecological sustainability. Contains a list of the most interesting heritage trees in the autonomous region of Galicia.
Aragón
Information on outstanding heritage trees in la Sierra de Guara and the rest of the province of Huesca. The website proposes different routes for visitors.
Inventory of listed trees in the Autonomous Community of Aragon, prepared by the General Directorate of the Natural Environment of the Government of Aragon. Using a search engine, there is access to a file which gives the principal characteristics of each of the listed trees in this Autonomous Community.
Information on the most outstanding trees in Linares de Mora, a town in the autonomous region of Aragon.
Link to the special trees route in El Grado, in the province of Huesca. Separate information card for each tree.
Asturias
The tourist information website of the autonomous region of Asturias provides access to information on its outstanding heritage yew trees.
Balearic Islands
List of heritage trees of the Balearic Islands, classified island by island.
Canary Islands
Web of the Government of Tenerife which allows you to enquire about the monumental trees in each of its municipalities.
Castile-Leon
Brief details on the ancient or outstanding trees to be found in this part of the province of León.
Madrid
Catalogue of the exceptional trees of the autonomous region of Madrid, with the exception of the city of Madrid itself.
Itinerary that takes visitors to the 17 most outstanding trees of the botanical garden, which contains more than 1,500 specimens.
The Basque Country
List and information cards on the exceptional trees of the Basque Country. The information is provided by the protected natural spaces network Red de Espacios Naturales Protegidos del País Basco.
Valencian Community
Web page of the Group Promoting the Study and Conservation of Natural Areas (GECEN). Puts forward different ideas on the importance of the oldest trees and the need for conservation.
Basic, technical and legal information on heritage trees of the province of Valencia. Information drawn up by el Departamento de los Árboles Monumentales de la Diputació de València.