Cholas have the habit of building temples wherever they go because they were hard core spiritual people who were continously engaging in religious activities and all.
The even dig lakes in the regions they go and hence in their rule of the regions of than Karnataka, they have built many temples and also have constructed many lakes in Karnataka especially in Southern Karnataka where they had ruled for a longer period of time( 987 to 1118CE) by overthrowing the western Gangas.
Bhoga Nandishwara Temple,Chikkabalapura
They even contributed donations to the temples built by other Kings and they were patrons of Shaivism
Most of these temple have been built during the time of Arulmozhi Varman aka Raja Raja Chola, Rajendra Chola and Rajadhiraja Chola cause we get this information from the Tamil inscriptions that are found in the temples in Karnataka.
Cholas are said to have left inscriptions by recording everything from place names to the contributions made in all the places they ruled unlike other kingdoms and this gives us a clear view on what all they did.
Pancha Lingeshwara Temple,Begur.
We can find Chola temple mainly in Southern Karnataka in districts such as Bangalore Urban, rural Bangalore, Ramanagara, Kolar,Mysore, Chamrajanagar,Tumkur,Dakshina Kannada and in Mandya and they even created temple towns in Karnataka region just like in Tamil region.
Actually much research isn't done on the Chola temples in Karnataka and I got many information shared by people in Facebook through the pages I follow rather than in Google.
A ruined Chola Temple and Mantapa in Mysore.(Name unknown)
Bangalore region alone has nearly 25 temples built by Cholas and two of such temples are very near to my place Indiranagar- The Chokkanathawamy Temple dedicated to Perumal( The Shila is brought from the Nepal) of Domlur and the Someshwara Temple in Ulsoor dedicated to Lord Shiva which houses the 68 Nayanmars of Tamil country- Both these temples are just near 2 kms from my house which I usually visit. Even the Madiwala lake is constructed during Chola era as per the inscription in the Madiwala Shiva Temple.
Mukthinateshwara Temple, Binnamangala
Nearly 100+ temples are there in Southern Karnataka which has been built Cholas in their brief period of rule which is really astonishing. Even in Northern Karnataka here and there we can Chola temples like below one.
Kalleshwara Temple,Davangere,North Karnataka
From one of the inscription we can also get to know that the Bangalore region was called as “Illaippakka Nadu” .
Southern Karnataka was called as “Thadikaipaadi" by Cholas and they had renamed it to Raja Raja Chola Valanaadu and still some names of places named by Cholas are still is use in Karnataka!
Someshwara Temple, Halasuru
I will share some links of the temples constructed by Cholas in the region.
Sources:-
Top 25 List of chola temples in Bangalore With Detailed information 2021
1,000-year-old Chola temple in K’taka ‘missing’: Ex-TN police officer
Locals and tourists rue sorry state of Chola temples in Karnataka, urge authorities to preserve them
Chola Temples in Karnataka - Department of Archaeology
Roots up south: Kadugodi got its name from temple cholas helped build