A title is for one person only at any time; the holder of the title is unique, in this way:
 The Queen, The Prime Minister, the Minister for the Environment, the Dean, the Duke of Parma, the Count of Monte Cristo, the Sheikh of Oman, the Bishop of London, the Colonel of the Regiment – Notice that God is One without definition and the.

Unique items:
Unique items such as famous buildings and works of art are proper nouns; the precedes the name:
 The Blue Mosque, the Eiffel Tower, the Kremlin, the Louvre, the Parthenon, the Mona Lisa, the Unfinished Symphony, the Bible, the Koran, the Sydney Harbour Bridge, the Golden Gate Bridge, the Vatican

Planets and stars:
The planets in the/our solar system have person’s names, and few individual stars also have their own names ; we do not use the:
 Mars, Venus, Neptune, Mercury, Sirius, Polaris
Notice also these common nouns:
 The sun, the moon, the earth, the pole star, the evening star, the dog star
These stars can also be proper nouns:
 The Pole Star
Constellations usually take the:
 The Great Bear, the Milky Way, the Scorpion, the Southern Cross
Some have personal names:
 Orion, Cassiopeia, Pegasus, Leo

Geographical names:
Each lake, mountain or island has its own proper name, without the:
 Lake Erie, Lake Como, Lake Placid, Mount Everest, Fujiyama, Trinidad, Popocatepetl, Majorca, Long Island, Capri, Crete.
 But the Isle of Man/Capri/Skye, the Mount of Olives
Groups of lakes, chains of mountains and groups of islands all take the:
 The Great Lakes, the Andes, the Alps, the Ural Mountains, the Pyrenees, the Atlas Mountains, the British Isles, the Azores, the West Indies, the Dodecanese, the Shetland Islands

Continents, countries, cities, towns:
Geographical names for these do not take the:
 Continents: Africa, Asia, North/South America, Europe
 Countries: Argentina, Brazil, China, England, Egypt, France, India
 Cities/towns: Athens, Caracas, Moscow, Paris, Naples, New York
 Exceptions are: the Hague, the Netherlands; we also have the Argentine/Argentina, the Antarctic/Antarctica
The precedes the names of some regions:
 The Far East, the Middle East, the Arctic, the Crimea, the Levant, the Punjab, the Sudan, the Ruhr, the Saar
and all deserts:
 The Gobi Desert, the Kalahari Desert, the Sahara Desert
notice also:
 The north, the east, the south, the west
As region within a larger geographical area: north, south are nouns, here: The south is warmer than the north.
Generally, there is of + name in political titles of countries; so they all take the before the words that name the form or regime of the country or state:
 The Kingdom of Denmark/Norway/Sweden/Jordan/the Netherlands, the Republic of France/Greece/Italy/Mexico/Algeria, the United Kingdom, the United States, the Union of Socialist Soviet Republic, the People’s Republic of China, the Grand Duchy of Luxemburg, the Principality of Monaco

Oceans, rivers, seas:
The precedes the names of all waters except lakes. Some of the names consist of adjective + noun and some of them have an of phrase.
 The Atlantic, the Pacific, the Arctic, the Baltic Sea, the North Sea, the Sea of Azor, the Sea of Japan, the Thames, the Danube
Channels, straits, canals, bays, gulfs generally take the:
 The English Channel, the Suez Canal, the Panama Canal, the Straits of Dover, the Straits of Gibraltar
The name of a bay or a gulf can include an of phrase, and the is than obligatory:
 The Bay of Bengal, the Gulf of Mexico, the Gulf of Finland
otherwise we use the only before national adjective + Gulf:
 The Arabian Gulf, the Persian Gulf but Baffin Bay, Botany Bay, Goose Bay, Thunder Bay
and with personal possessive noun:
 Amundsen´s Bay, Hudson’s Bay

Languages:
The name of a language is a proper noun and singular; in English we do not use the:
 English is spoken in many parts of the world. Portuguese is the language of Portugal and Brazil.
We can, of course, say: the English language, the Spanish language in which Spanish and English are adjectives. Also:
 The English that I learnt at school, the English of North Americans – with a following definition

A Public places:
Cinemas, hospitals, hotels, libraries, museums, restaurants and pubs, theatres, parks and the like usually take the before the name except when it is a person’s name in the possessive form:
 The Odeon, the London Hospital, the Royal Hotel, the Westminster Library, the Victoria and Albert Museum, the Trocadero Restaurant, the Green Man, the King´s Arms, Claridge´s, Miligan´s
 We also have (the) Green Park, the Memorial Park but without the before a personal or place name: Bushey Park, Hyde Park, Richmond Park, Victoria Park, Wembley Park.
 This applies also to Universities, Colleges and Schools: London University, Harrow School, Clare College, Watson´s College

Streets and roads:
Named streets in cities, towns and villages do not take the.