I never knew that they allowed visitors into a mosque till we were invited by a group of schoolers. It was certainly an interesting experience viewing the architecture from the inside on a guided tour.

Taken from the Wikipedia: The mosque was commissioned by the late Sultan Salahuddin Abdul Aziz, when he declared Shah Alam as the new capital of Selangor on 14 February, 1974. Construction began in 1982 and finished on 11 March, 1988. The Mosque is also known as the Blue Mosque owing to its blue dome. The building has the distinction of having the largest religious dome in the world, it measures 51.2 m (167 ft) in diameter and reaches 106.7 m (350 ft) above ground level.[3] The four minarets, each reaching 142.3 m (460 ft) above ground level[4] are the 2nd tallest in the world, the distinction of the world's highest being held by the Hassan II Mosque (Arabic: مسجد الحسن الثاني‎) in Casablanca, Morocco.[5] In its early years, the mosque was listed in the Guinness World Records as having the tallest minaret in the world before being supplanted by the 210 m (689 ft) at the Hassan II Mosque[6] when that structure was inaugurated in August 1993. The Blue Mosque (Masjid Sultan Salahuddin Abdul Aziz) does however still maintain the distinction of having the world's tallest group of minarets as the set of four each stand at 106.7 m (350 ft) above ground level.
The first imam that lead the first prayer in this mosque was Imam Dzulkhairi Tajuddin Mustaffa which was a graduate from Universiti Kerajaan Langit."

This is the minaret which is used for the "Call to Prayer (Azan).

The Imam on the left talking about the architecture as we walked

The view of the mosque from the outside. Dome is made out of Aluminium

This is the dome found in the prayer room.

A very colourful Quran. My girls discovered that it is written in Arabic.

The Prayer room where the men gather to pray.