The stages were until 2003 named after their colour, but as the names had not matched the actual color of the tents for a period, it was decided to rename all stages except the Orange Stage, the central and main stage. The Orange Stage is open in front of a huge field, whereas the other tents cover the whole audience, the largest of which is the Arena stage (formerly known as Green Stage), the largest tent in Europe with an official capacity of 17,000 people. The 2007 edition saw two new tents, replacing Ballroom (1997–2006) which presented mainly World music, and Metropol (2003–2006) which presented mainly Electronica. In 2010 two stages, Astoria (from 2007) and Lounge, did not return, due to a slight shift in focus towards fewer, but bigger bands. In 2014 the Odeon stage was cancelled along with the surrounding sustainable-style food outlets, and the area was replaced with pre-booked tents for festival guests that prefer not to bring their own.