Open to visitors when it is not being used for prayers (opening times are posted by the gate). The mosque is very welcoming and if your clothes aren't considered appropriate you'll be given a robe upon entry. Remove your shoes before entering and be respectfully quiet inside as there may be some people there meditating and praying. The mosque is visible from around the centre of the city, but the entrance is located on Jalan McArthur, just south of Jalan Elizabeth Dua.