two new rides to the park: Billy's Whizzer and Rodger the Dodger's Dodgems was built in 2000 on the former site of Circus World (instead of Colossus which was built at Thorpe Park instead). Development as resort On 22 May 2007, The Tussauds Group was taken over by Merlin Entertainments Ltd, which owns other brands such as Sea Life Centres. Besides Chessington, Merlin also purchased Alton Towers, the nearby Thorpe Park, and Madame Tussauds, which made Merlin the second largest entertainment operator in the world in terms of attendance numbers, behind Disney. As Chessington World of Adventures and Thorpe Park are located within 20 miles of each other, Merlin Entertainments has made efforts to market the two parks to different age groups: Thorpe Park caters to teenagers and young adults, while Chessington World of Adventures Resort is for families and people of all ages. In June 2007, the park opened the Safari Hotel next to Chessington Zoo, themed to a safari lodge. 2008 saw the opening of the Chessington Sea Life Centre. Also in 2010, the Wanyama reserve was opened, giving the Africa-themed Safari hotel guests a view of animals. The Wild Asia area was also added, with its KOBRA ride. In 2011 the Ocean Tunnel and surrounding rooms in the Sea Life Centre were re-themed to Azteca. In 2012 a new land themed to Africa replaced ToyTown. In 2013, Chessington introduced Zufari: Ride Into Africa, with visitors touring the area in a safari truck. In the same year, the annual Halloween Hocus Pocus event included a new attraction, The Mystery of Hocus Pocus Hall, featuring projection-mapped visual effects. In 2014, "nearly £15 million" was invested in the resort as the whole, with a new wing built next to the Safari Hotel, advertised as a second standalone hotel, named "Azteca Hotel". The Safari Hotel also received a second pool. Theme park developments for the year included the refurbishment of the Runaway Train roller coaster as Scorpion Express and Amazu Treetop Adventure, a children's raised play area within the zoo. The park's annual Halloween event was rebranded Howl'O'Ween. Over the festive period Chessington launched the new Winter's Tail event, featuring a new seasonal show A Christmas Gift, as well as market stalls and a 60 ft Christmas tree. Attendance rose to 2.05 million guests in 2014, the second highest figure in the park's history, which previously peaked in 1995. 2015 was