Australia is the smallest continent in the world. It is a little smaller than China. It is on the Southern Hemisphere of the earth. Australia is big, but its population is small. The population of Australia is nearly as large as that of Shanghai.

Enough laws have been made to fight against pollution. The cities in Australia have little air or water pollution. The sky is blue and the water is clean. You can clearly see fish in the rivers. Plants grow very well.

Last month we visited Perth, the biggest city in Western Australia, and went to a wild flower exhibition. There we saw large numbers of wild flowers on show, most of which we had never seen before. We had a wonderful time. Perth is famous for its beautiful wild flowers. Every year in spring Perth has a wild flower exhibition. After visiting Perth, we spent a day in the countryside. We sat down and had a rest near a path at the foot of a hill. It was quiet and we enjoyed ourselves very much. When we heard bells ringing at the top of the hills, we looked up, but what we saw made us pick up all our things and run back to our car as quickly as we could. There were about three hundred sheep coming towards us along the path.

Australia is famous for its sheep and kangaroos. After a short drive from any town, you will find yourself among the white sheep. Sheep, sheep, everywhere you can see sheep.

Asia,the largest continent on Earth,is home to more than half of the world’s population. With so many different cultures and languages, each country is worth a lifetime to travel around. Here are some top countries for you to have an unforgettable travel experience .

India

Home to one of the world’s richest and oldest civilizations, India has many different cultures, religions, peoples and traditions. With the Himalayas lying in the north, jungle and beaches can be found in the rest of the country. From temples to food and history to wildlife, the beautiful country has something for everyone.

Thailand

Thailand is a very popular tourist attraction. Its golden sands and beaches attract lots of people every year. Many also come to party in its beachside towns, visit some beautiful and peaceful islands such as Ko Tao, or enjoy the attractive scenery at Krabi.

Japan

Although it consists of almost 7,000 islands, most of Japan’s main sights and tourist attractions can be found on the four largest of them.   Lying to the east of Asia, the island nation is an attractive place as a mixture of traditional palaces and modern buildings Covered in mountains and forests, the country is home to some delightful nature and scenery.

Olympic host cities are generally considered to be equipped with advanced technology and expensive facilities. Now, people can just go there for a little Olympic-level entertainment.

Athens, Greece (1896 and 2004)

Home to the first modern Olympic games in 1896, Athens' history of the Olympic tradition dates back several thousand years. Every four years, the Olympic torch is lit at the Panathenaic Stadium in Athens before beginning its long journey to the new host city. Visitors can walk through the Olympic Velodrome in the Olympic Sports Complex and step back in time at the 50,000-seat stadium.

Barcelona, Spain(1992)

These days Barcelona is among the world's most visitable cities even without Olympic fame, but that isn't always the case. The telecommunications tower built for the games by Spanish architect Calatrava is also an iconic(图像的） device of the city's skyline, and its Olympics stadium- Montjuic Stadium is regularly used to host A-list musical performances like The Rolling Stones, Madonna, and Beyonce.

St Moritz, Switzerland(1924 and 1948)

Appropriately, the town that invented Alpine tourism has hosted the Winter Olympics twice, and continues to make use of its many sports facilities-if you can afford to get there. Stay at the Kulm Hotel for the easiest access to the Kulm Country Club, where guests can skate on the same lake used by mid-century Olympians, or test your courage on the Olympia Bob Run, one of the few places where you can ride a full-speed Olympic bobsled(双人雪橇） on a run constructed entirely of ice.

Sydney, Australia (2000)

The turn-of-the-century Sydney Summer Olympics were named the "Green Games" by the International Olympic Committee (10C) and were designed to introduce a more environmentally conscious way of hosting the event. The structure that best shows Sydney's efforts to be an example of continuing Olympic development is the ANZ Stadium.