An exhibition on their detention, killings and the subsequent investigations into them has opened at the Russian State Archives in Moscow.
It comes as Russians continue to reassess the reputation of their last tsar.
He and his family and four members of staff were killed without trial by Bolsheviks in the early hours of 17 July 1918, in the cellar of a house in the Urals city of Yekaterinburg.
The Soviet authorities drew a veil over what had happened.
The exhibition's curator, Marina Siderova, says Russians now want to know more about the subject.'Great interest'
"No one was talking about this before," she says.
"In Soviet times it was taboo, a closed subject and probably now we are only just starting to talk about this tragedy.
"The number of people visiting the exhibition shows there is great interest in this topic."