Taken in part from Wookieepedia:
Keren was the most important trading city on Naboo, and a bustling mercantile hub. Keren was home to one of the planet’s starports, named Kwilaan Starport, which was located in its own section in the western part of the city. Lake Varum lay on the edge of the city, and there was also a canal that curved its way through the middle of the Keren, ending at the Keren Grand Arch that overlooked the cityscape. The city was also the site of the Keren City Street Race.
Please see the Maps section for a City map of Keren.