It is the principal town and headquarters of the district of same name. Ludhiana, is industrial metropolis of the Punjab industry. Its machine tools and motor parts are widely exported. It is the biggest center of hosiery, both cotton and woolen in the country. There are a number of gurudwaras associated with the life and visits of Guru Gobind Singh Ji. Among them the gurudwaras of Charan Kanwal and Manji Sahib are important. 

The district can rightly boast of its contribution in the national freedom struggle. Among the greatest patriots belonging to this region are Lala Laj Pat Rai, Sardar Kartar Singh Sarabha, Sat Gur Ram Singh, Sardar Jagat Singh Binijhal, Baba Santa Singh, Bhai Bhan Singh, S. Ishar Singh and Maulana Habibur Reman. 

The Christian Medical College, an Engineering College and the Punjab Agricultural University, which has ushered green revolution in Punjab, are renowned centers of education. Ludhiana holds world records in food production. 

Gurudwara Charan Kanwal:
This Gurudwara situated at Machhiwara about 35 kms. from Ludhiana marks the spot where Guru Gobind Singh ji, who was being carried by Ghani Khan and Nabi Khan as a Muslim Saint in disguise to escape the Mughal forces, had rested for a while. 

Gurudwara Manji Sahib Alamgir: 
The beautiful structure 10 kms. from Ludhiana is situated at the spot where Nabi Khan and Ghani Khan had finally left Guru Gobind Singh Ji. Tank near the Gurudwara commemorates the spot where Guruji had shot an arrow and the parched earth had yielded water. A fair is held here in the last week of December. 

Gurudwara Nanaksar Sahib (Jagraon): 
Situated near Jagraon at a distance of about 38 kms. from Ludhiana on Ferozepur Road Gurudwara founded by Baba Nand Singh, Nanaksar Sahib is a model of elegance and architecture. 

An annual gathering known as ' barsi ' is a five-day function, which is concluded on a day corresponding to 13th Bhadon (August). Nearly one-lakh devotees attend it from all parts of India. 

Sarai at Doraha: 
This beautiful Sarai (protected monument) is situated to the south of Ludhiana-Khanna road at Doraha. The Sarai has 168 meter. Square enclosure of walls with octagonal bastions at each corner. The entrance arch of each gateway is framed with glazed tiles forming a pattern of multi-cornered stars and swastikas. Noteworthy are octagonal apertures in the ceilings for light and ventilation and a unique 'hammam system' for boiling water.