The Holy Quran:"And I have not created the Jinn and the men but that they may worship Me". (51:57) . "Surely, the first house founded for mankind is that at Becca (Mecca), abounding in blessings and guidance for peoples". (3:97). "He alone can maintain the Mosques of Allah who believes in Allah, and the last day, and observes prayer and pays the Zakat and fears none but Allah; so these it is who may be rightly guided." (9:18) The Holy Prophet on the importance of mosques O ye people, praise Allah. Whoever builds a mosque for Allah, Allah, The Exalted, shall build a house for such a one in paradise. The Promised Messiah said:"If you want Islam to progress build a mosque. Wherever our Jamaat is established, a mosque should be built. Our Jama'ats progress is founded on the construction of mosques. If there are only a few Muslims in a village or a city, build a mosque with good intentions and God will bring more Muslims to that place. It is not mandatory that the mosque be embellished or be a brick building. Wall off a piece of land and build a room with a thatched roof..." (Malfoozat Vol 2, p. 42) 

Baitur Rahman - Valencia Spain

This is the second mosque by the Ahmadiyya Muslim Jamaat in Spain, after the first one was built in Pedro Abad after 700 years. His holiness Hadhrat Mirza Masroor Ahmad (atba) inuagurated this mosque on 29 March 2013. He led the friday prayers (Jummah) from this mosque named Baitur Rahman.