burada/şurada/orada are local adverbs which are the case of locative:
Ahmet burada: Ahmet is here.
Kitap şurada: The book is just there.
Dağ orada: The mountain is there.
But bura(sı)/şura(sı)/ora(sı) are noun which are in the case of nominative. So we use them as noun and subject/object.
Bura(sı) güzel bir yer(dir): This is a good place. (This place)
Şura(sı) bizim köyümüz(dür): This/that (place) is our village.
Ora(sı) Ali'nin evi(dir): That (place) is Ali's house.
Bura is here.
Şura is between here and there. The place must be close, but further than 'here' and closer than 'there'.
Ora is there.