The definite article with names of places and institutions

The definite article is used before a place name if it consists of an adjective followed by a noun:

the National Gallery
the British Isles
the British Council
the Royal Court

The definite article is also used if the name of a place or an institution contains the possessive of-construction:

the University of Chicago
the Leaning Tower of Pisa
the Tower of London
the Cape of Good Hope
the Island of Lesbos
the Isle of Man
the Gulf of Maine