The Romanovs were buried in two unmarked graves, one containing Nicholas, Alexandra, and three of their daughters and another containing Alexei and one of his sisters.
In "The Crown," the remains of the Romanovs are shown to have been discovered, excavated, and identified only after Russian president Boris Yeltsin's visit to London in 1994.
However, according to History Extra, the final resting place of the family was first located almost two decades earlier by an amateur archeologist. They were then excavated in 1991 and the process to identify them began in 1993.
Similarly, the timeline of the reburial has also shifted for the purposes of the drama. It took place several years later, in 1998, per the BBC, only after Nicholas' remains were verified, not in 1994 as the show appears to suggest.
There is also no evidence to suggest that Queen Elizabeth II personally asked Yeltsin to give the Romanovs an official burial, and she did not plan her three-day visit to Moscow in 1994 to coincide with seeing the family buried.