From left to right:

Front façade, ca. 1096-1100; spires 13th century.
Source: Wikimedia Commons / Photo: Viault / CC3.0
Image source

Aerial perspective from northeast.
Source: Wikimedia Commons / Photo: Roi.dagobert / CC3.0
Image source

Exterior perspective of east façade.
Source: Wikimedia Commons / Photo: Badseed / CC3.0
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