One unusual feature of Sikhism is that all Sikh males share the name: "Singh" which means "lion." Women carry the name of "Kaur" which means "princess." This practice apparently started in the early years of the religion, and was a reflection of the Sikh's absolute rejection of the Hindu practice of caste. In Hinduism at the time, one's last name often identified their caste in society. This rigidly determined where they were positioned in society. Caste is totally incompatible with Sikh's beliefs of equality. Judging by the names of Sikhs mentioned in media articles, many Sikh males now use "Singh" as a middle name.
Sikhism has forged a unique form of architecture which Bhatti describes as being "inspired by Guru Nanak ’s creative mysticism" such that Sikh architecture "is a mute harbinger of holistic humanism based on pragmatic spirituality".  The keynote of Sikh architecture is the Gurdwara which is the personification of the "melting pot" of Punjabi cultures , showing both Islamic , Sufi and Hindu influences. The reign of the Sikh Empire was the single biggest catylst in creating a uniquely Sikh form of expression, with Maharajah Ranjit Singh patronising the building of forts, palaces, bungas (residential places), colleges, etc. that can be said to be of the Sikh Style . The "jewel in the crown" of the Sikh Style is the Harmandir Sahib .