Formula 1 track architect Hermann Tilke says Baku will be the world's fastest street circuit when it hosts the European Grand Prix later this year.
The track around the Azerbaijan capital will make its debut on the Formula 1 calendar this season, hosting its first race on June 19.
Tilke and his team started work on the track in 2014, and the German says there is no circuit like it in the world.
"Baku will be the world's fastest city circuit and the track loop around the city's historical centre will create a unique and remarkable atmosphere for fans watching in the grandstands and at home," Tilke said.
"There is no track like Baku City Circuit - it will be one of the most exciting ones on the calendar.
"Baku, of course, is not comparable with any of the permanent circuits, because it is a city circuit. But even when compared to city circuits, Baku is unique."
He added: "The most challenging task was to come up with an idea for the routing of a city track, which will be suitable for F1 in Baku.
"City circuits are always challenging to build, because the team has to construct the racetrack within the city. Various problems arise when designing a circuit in the city. But together with the Baku City Circuit team we successfully solved every problem."
Tilke says the calculated laptime will be 1m41s, although it will obviously depend on the development of the cars.