Families of those who died in the July 7, 2005 London transit bombings released plans on Friday for a permanent memorial made up of 52 stainless steel columns, one for each of the victims.
The government is backing plan for the monument, which will stand in a corner of Hyde Park in the center of the city.
Three years ago four suicide bombers, all British Muslims, blew themselves up aboard three crowded subway trains and a bus in the deadliest attack on London since World War I. More than 700 people were injured in the rush-hour attacks.
Victims' relatives helped choose the design for the memorial, a series of 3-meter columns clustered into four interlinked groups representing the four attacks.
Though cast from the same mode, each column will be slightly different.
Grahame Russell, whose son Philip died in the bus bombing, said the pillars "remind me that prior to July 7 these 52 people that died stood tall in this world."
"The material itself is as indestructible as the memories we have of them," he said.
Saba Mozakka, whose mother Behnaz died in the subway bombing near Russell Square station, said the relatives were proud the memorial could stand in the 142 hectare park, one of the city's highest-profile sites and already home to a memorial to Princess Diana.
"The choice of location was very important to us," she said. "July 7 was not just a personal loss but affected the city as a whole."
The memorial is expected to cost about 1 million pounds (USD 2 million) to build and is due to be unveiled next July 7, the fourth anniversary of the bombing.