Edinburgh Zoo is spread out over 82 acres on the slopes of Corstorphine Hill providing extensive views of the city. It is the headquarters of the Royal Zoological Society of Scotland and welcomes over 600,000 visitors every year, making it Scotland’s second most popular attraction, after Edinburgh Castle. The Zoo is home to over 1000 animals from all over the world, providing plenty of interactive exhibitions and activities of all kinds. Edinburgh Zoo is a great place to bring the kids to see the giraffes, zebras, hippos, bears and is the only Zoo in Britain to keep koalas. Edinburgh Zoo is the only zoo in the world to house and to breed penguins and has a been very successful in breeding four different species of the bird. Visitors can watch the birds swim underwater through glass windows of their pool. The highlight for most visitors is the 2pm penguin parade. On the 10th January 2011 the Royal Zoological Society of Scotland signed an historic agreement with China which will see the arrival of two Giant Pandas to Edinburgh Zoo – the first in the UK for 17 years. Between 2011 and 2021 the zoo will undertake a world first research project alongside a host of other research, education and conservation programmes both here in the UK and in China to reintroduce giant pandas into the wild. The two giant pandas, Tian Tian and Yang Guang, will be the only animals of their kind in the UK, and one of only 3 pairs in Europe.