Vimans

The divyadesams get a special prominence due to the vimAnam above the garbha gruham of the prime deity with beautifulsculptural  works. There are altogether 96 different types of vimAnams found in the 108-divya desams. The few important among them are:

1. PranavA kruthi vimAnam (in temples formed by devas)
2. vimalA kruthi vimAnam
3. suddha satva vimAnam
4. thAraka vimAnam
5. suganAkruthi vimAnam
6. Vaithika vimAnam
7. vutpalA vimAnam
8. sowndarya vimAnam
9. pushkalA vartha vimAnam
10. vEda chakkra vimAnam
11. sanjeevi vigraha vimAnam
12. astAnga vimAnam (as in paramapadam)
13. punya kOti vimAnam
14. sreekara vimAnam
15. ramya vimAnam
16. mukunda vimAnam
17. vijaya kOti vimAnam
18. simmAkkara vimAnam
19. taptha kAnchana vimAnam
20. hEma koota vimAnam

It is commonly told by our ancestors that just the gopura darishanam grantsus
kOdi punyam. Such is the importance given to the vimAnams in the divya desams.

https://www.google.com/search?q=divya+desam+vimanams

Narayana manthram

Similar to the Narayana manthram, which has 3 padhams,

https://www.google.com/search?q=Narayana+manthram

the divya desams also have 3 important reasons for their divinity. The temple, the perumal or the deity and paasurams (mangalAsAsanam) of alwars.

Like the eight aksharAs of the narayana manthram, the divya desams have saptha punyam :

"kshetram vanam nadhi sindhu puram pushkarini tatha vimAnam saptha punyancha
yatra desa"

Temple, Vimanam, Mandapam, Forest, Saras, Kshetram, River and City

https://www.google.com/search?q=Saptamrita+kshetram

and the alwar paasurams thus making the divya desams capable of giving same palan(result) given by the chanting of the astAkshara manthram.

Classified

1. Arsham: divya desams formed by rishis. 
2. PowrAnikam: Those divya desams, which are regarded high in the purAnAs.
3. Svayam vyakhtha stalam or saithyam: formed by themselves 
4. Deivam: Those which were formed by brahma and other devas 
5. mAnavam: Those which were consecrated by adiyars and kings 
6. abhimAna stalams: largely enjoyed and praised by Acharya purshAs 

Any divine temple, irrespective of the above categories, if alwars had donemangalasasanams to the deity, is called as divya desam.

Neelamegha

https://www.divyadesam.com/hindu/temples/devaprayag-temple.shtml
https://8div.blogspot.com/search/label/Thirukkannapuram

Govardhana

http://beliefhill.blogspot.com/

Tiruvaaippadi

https://hoodinformation.blogspot.com/

Swami Vivekananda Bharathiar

Swami Vivekananda, an Indian Hindu Monk is a devotee of Parthasarathy. In one of his letters in the year 1893 to his disciple Alasinga, he writes 'Take a bow before Lord Parthasarathy of Thiruvallikeni and give an undertaking before Him of a great sacrifice, one of a whole life for the poor, the lowly and the oppressed - for whom Lord Parthasarathy comes from time to time and whom he loves above all.' You can find this letter to his disciple inscribed in one of the walls at temple corridor.

Bharathiar, the legendary Tamil poet and independence activist was struck by an elephant at the temple, whom he used to feed regularly and attained immortality

Temple
http://8div.blogspot.com/search/label/Parthasarathy

Source
https://freeglobaluniversity.blogspot.com/search/label/RamakrishnaSaradaVivekanandaNiveditaBharatiTeslaTata