Hundreds of people watched as the towering chimney of a former power station was demolished.
The landmark in Dartford, Kent, collapsed after a "powerful boom" from a controlled explosion, which caused a cloud of smoke at about 08:00 GMT.
Littlebrook Power Station was situated next to the Queen Elizabeth II Bridge and the Dartford Tunnel.
Phil Church, who lives in nearby Aveley, said: "You could feel the blast from across the river."
After the controlled explosion, which is part of a demolition project, the tower was replaced by smoke and debris.
Littlebrook Power Station was an oil-fired station in the 1980s but the original power station first started generating electricity in 1939.
At one point, it had a generating capacity of 1245MW - enough to supply more than a million households.
So farewell then Littlebrook Power Station, next to the Dartford River Crossing. Gone with a bang at 8am this morning! pic.twitter.com/Y1emK4Liek— Will Jackson (@will_jackson) December 15, 2019
Mr Church, 45, said: "It was quite a powerful boom. You could feel the blast from across the river.
He added: "It became quite a landmark for everyone I think. Certainly for me. You always knew you were nearly home when you caught a glimpse of it.
"Listening to everyone there this morning and the riverside was packed with people, they said very similar.
"It's been there many years. Sad to see it go really."