Television footage showed shattered windows in a nearby building and flooding from a burst water pipe.
The pavement is still a carpet of glass from shattered windows in every building.
The blast shattered windows of nearby buildings and left two others wounded, witnesses said.
The blasts that ripped through Boylston Street also shattered windows at the central Boston Public Library, which remains closed.
The blast shattered windows in some businesses at a small strip mall nearby, and residents of some neighboring apartments reported minor interior damage.
Qassim Saad, an Arabic language teacher in an elementary school nearby, said his pupils began screaming as the explosion shattered windows and sparked panic.
Our living room was covered with glass from the shattered windows.
Ms Hazan told BFM TV the blast - which happened at 11:15 (09:15 GMT) - had been "very strong" and had shattered windows in other buildings.
BBC: Reims blast and building collapse in France kills three
Police are continuing to investigate the cause of the explosion, which leveled the house, scattered lumber, sheet rock and insulation and shattered windows at surrounding homes.
Yossi Haziza, a Sderot resident in whose courtyard the first rocket exploded, was looking at the walls of his home sprayed with shrapnel and shattered windows.
The blast also shattered the windows of nearby businesses, littering debris on the ground and across the road.
Police are investigating an apparent explosion in Denbigh which damaged three cars and shattered the windows of two houses.
Bakery owner Mirza Khan said the blast shattered the windows of his nearby shop where people were waiting to buy bread, leaving six wounded.
The explosion shattered car windows and toppled restaurant walls.
It was littered with rubble, while its doors had been blown off and its windows shattered.
On another street the New York Hotel is now a shell, windows shattered and walls crumbling.
In Goma, a UN spokeswoman said that cars were being damaged and windows shattered in the regional capital as protesters attacked the UN base.
"I heard a loud boom and immediately after that windows were shattered and parts of my house were damaged, " he said.
When I was allowed to leave around 1:30 or 2:00 in the afternoon, walking through the streets, you could see that shop windows had been shattered, produce had been flung from the shelves.
The force of the blast shattered some of the embassy's windows, according to Prakash.
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