The front of Buckingham Palace is now being illuminated at night, with the help of a £37,000 light installation.
Buckingham Palace will be lit up during winter
From Tuesday, it will be lit from sunset every day during the winter for the remainder of the Queen's reign.
The environmentally-friendly LED lights were installed after concerns visitors could not see the royal residence clearly after 4pm in winter.
However, environmental group Greenpeace said it was "disappointed" at the decision.
Electrical company Philips has used 59 state-of-the-art LED lights which it says are low maintenance and less intrusive than regular lighting.
The palace's three portico columns and features between the windows will be highlighted.
The Queen is said to have agreed after reassurances staff with bedrooms at the front would not be disturbed.
The moves follows concerns by tourist bosses who say visitors cannot see the landmark properly after twilight during the winter months.
But Greenpeace were unimpressed.
Spokesman Charlie Kronick said: "These lights are going to blaze away until the end of her reign, and the way she's going, that could be a very long time, probably long enough to see the catastrophic effects of climate change strike our country and the wider world."
The cost of the installation will be paid for through grant-in-aid.