White Tower of Ecthelion
The magnificent tower of the palace of the King of Gondor at MinasTirith.
|The Tower of Ecthelion, standing high within the topmost walls, shone out against the sky, glimmering like a spike of pearl and silver, tall and fair and shapely, and its pinnacle glittered as if it were wrought of crystals
|Details and Comments
This was obviously one of the Númenoreans' most beautiful buildings in Middle-earth (though built by a Steward rather than one of the line of kings.)
In the following quote from UT we find an interesting detail - a connection between the stone used for MinasTirith and Orthanc: