London's West End lit up for Ramadan for first time
Coventry Street, which links Leicester Square with Piccadilly, is illuminated with "Happy Ramadan".
The lights were switched on by the Mayor of London, Sadiq Khan, who is one of the 1.3 million Muslims in London celebrating Ramadan.
The display was organised by Ayshea Desai, who was inspired by her fondness for Christmas lights.
About 30,000 sustainable lights are on display
She said: "I just had the ambition to do it like the Christmas lights.
"I remembered going to visit the Christmas lights with my sister when I was growing up and I also had an opportunity to live in the Middle East and I wanted to bring that joy and magic to London, the city that I'm from."
This year, Ramadan will begin on Thursday
Ms Desai began the project three years ago.
"It looks incredible, I'm so overwhelmed with the response," she said.
About 1.3 million Londoners will be marking Ramadan
"It's such an important month for Muslims.
"I wanted to raise that awareness as well to let our neighbours know that this is a really important month for us, it's my favourite month of the year and I'm just grateful that we're here today."
Events are being held throughout the month across London
Elsewhere in London, an open Iftar - breaking of the fast - will be held at the Victoria and Albert Museum in south Kensington which has also erected a pop-up mosque and Ramadan pavilion for Muslims and non-Muslims.
London's mayor Sadiq Khan, a Muslim, will also be fasting
Chelsea football club will also hold an open Iftar at the side of the pitch at Stamford Bridge, in what will be a first for the club and a Premier League stadium.
Wembley stadium will do the same later in the month.