Apart from being a place of worship of Muslims, apparently mosques also have a high value in the form of the building. Very cool and amazing, not least with the buildings other than a place of worship. Just imagine if Muslims can worship in one place. Fun course and following these mosques:
Sangkore Mosque, Timbuktu

Mosque Europa Point, Gibraltar


Badshahi Mosque, Pakistan


Omayyed Mosque, Syria
