Its location in the region is just on the south eastern border, west of the capital city of Port of Spain and east of the town of Carenage.

Diego Martin town in the Northern Range was once filled with a number of small valleys but is now a densely populated area.

It consists of a cluster of communities including Congo Village, Diamond Vale, Green Hill, Patna Village, Petit Valley, Blue Range, La Puerta Avenue, Four Roads, Rich Plain, River Estate, Blue Basin, Water Wheel, West Moorings, Bagatelle and Sierra Leone.

The home of the Order of Preachers in Trinidad and Tobago is located in Diego Martin at the St. Dominic's Pastoral Centre.

Over the years priests from the community in Ireland have visited and ministered in Trinidad and Tobago, joining with locals who have been ordained into the priesthood.

Over the years the site of the Order of Preachers in Diego Martin, Trinidad and Tobago has been developed/redeveloped to house the following: ~ St. Catherine of Siena Adoration Chapel ~ Roman Catholic Church – St. Finbar's R.C.

[7] Some of the activities which have been held at the auditorium are as follows: - Catholic Religious Education Development Institute's (CREDI')s first graduation ceremony on September 12, 2011.

The graduands consisted of students in the Post graduate programme "Masters in Educational Leadership course with UD" (University of Dayton Ohio) and "five of the seven persons who completed the 2010 Social Justice online course with the UD, in partnership with CREDI – The Catholic Institute, and CCSJ"...[8] - The launch by CREDI of its East Port of Spain Project on April 11, 2015 at its 2015 CREDI-table conversations on Equity in Education in Trinidad and Tobago.

~ Presbytery In close proximity to the St. Dominic's Pastoral Centre is the Finbar Ryan Geriatric Home.

[7] The Shri Ram Dhaam SWAHA Mandir was built in 1998 and has a 15-foot animated murti of the Hindu deity Hanuman, the first of its kind in the Western Hemisphere.

[13] ~ St. Michael's Anglican Churchyard Cemetery River Estate Museum Is located at the northern end of the Diego Martin Valley.

The location of the mall made it an easy drop in place on the way home for the pick up of groceries or to deal with one's personal affairs.

Church on the "feast of Blessed Jane of Aza, mother of St Dominic, founder of the Dominican Order".

[19] Ms. Enid Browne was born in Diego Martin, attended Providence Girls in Belmont and in 1963 represented Trinidad in England at the Netball World Championships.

[20] Mr. Chris Braithwaite was born in Maraval, Diego Martin in 1948, represented Trinidad and Tobago at international athletics meets.

Brathwaite attended several schools in the United States, starting at Eastern New Mexico in 1972, moving to Spokane Community College in 1973, and then do most of his studies at the University of Oregon (1974-77), from which he graduated with bachelor's and master's degrees in sociology."