Camp Nou is a football stadium in Barcelona, Spain. It is the largest stadium in Europe and the tenth largest in the world. Many international matches are played there. There is a museum in the stadium-the FC Barcelona Museum. It is considered the best football museum in the world There are multi-media displays(多媒体展示) about the Barcelona Club and its history as well as a fantastic view of the stadium. Camp Nou is also a place where you can enjoy major concerts and other non-football events.

Beijing National Stadium, also called the Bird’s Nest, is located in China.It was designed for use during the 2008 Summer olympics and Paralympics. It is the world's largest steel structure(钢结构). The stadium has recently been transformed(改造) so that it can be used for winter sports.

Maracana Stadium is an open-air stadium in Rio de Janeiro, Brazil. It was opened in 1950 for the FIFA World Cup. Since then, it has mainly been used for football matches between the major football clubs in Riode Janeiro. It is the largest stadium in South America.

Wembley Stadium is located in Wembley Park in London, England. The England national football team play most of their home matches there. The stadium is also used for other sporting events. It is the second largest stadium in Europe (after Camp Nou) and one of the largest and the tallest in the world, with every seat under a roof. It was very expensive to build.

The city of Heracleion was buried underwater 1500 years ago. This grand city had been mentioned by the Greek writer Herodotus, the 5th-century BC historian. He had told a wonderful tale of Helen of Troy, who traveled to Heracleion, then a port of great wealth, with her Trojan lover, Paris.

When French underwater researcher Franck Goddio happened to discover some cultural treasures, it led them to one of the greatest finds of the 21st century, a city underwater. The discovery took place when Goddio had been in search of Napoleon’s warships from the 1798 Battle of the Nile, when he had been defeated by Nelson in these very waters, but to his surprise, he made this important discovery.

The discoveries include the huge statues of the Egyptian goddess Isis, the god Hapi, and an unidentified Egyptian pharaoh(法老), all preserved in excellent condition by their muddy burial coverings. Hapi, the god of the flooding of the Nile especially stands out for its size. Along with these 16-foot statues there are hundreds of smaller statues of Egyptian gods, among which are the figures that guarded the temple where Cleopatra took office as Queen of the Nile. Dozens of sarcophagi(石棺)have also been found, containing the bodies of mummified animals sacrificed to Amun-Gereb, the super god of the Egyptians.

Evidence shows that Heracleion slipped into the water sometime in the 6th or 7th century AD. The discovery of Heracleion will now add depth and detail to our knowledge of the ancient world, because among the discoveries, there are perfectly preserved stones carved in both ancient Greek and ancient Egyptian.

Just as John Lubbock said, we may sit in a library and yet be in all quarters of the earth. Here are some of the coolest libraries of the world.

Stuttgart City Library

Despite a classic white-on-white color, Stuttgart City Library is one of the most visually appealing modern libraries. The amazing modern and simple look is the product of the Korean architect Yi Eun-young. The German library opened in 2011, and cost nearly 80 million euros to construct.

Kanazawa Umimirai Library

Architects from the Coelacanth K&H Architects studio designed the Kanazawa Umimirai Library lo create the best reading environment. Healed floors, an outpouring of natural light, and other features were specifically included lo achieve this goal. The wall, which consists of thousands of tiny openings, allows natural lighting into the building, improving the overall feel of the space. This Japanese library was opened in 2011, and reflects the appearance of many modern and simple spaces.

Library of Congress

In 1800, Congress set up the Library of Congress in Washington D.C.. Fifteen years later, Thomas Jefferson offered his personal library to replace books that were lost when the British set the building on fire in 1814. His books, which took nearly 50 years to collect, varied from texts on science, literature and philosophy, to books in a variety of foreign languages. These days, the Library of Congress offers more than 155 million items and the largest rare book collection in North America.

State Library of Victoria

The Slate Library of Victoria, located in Melbourne, Australia, is one of the largest exhibiting libraries in the world. Though it opened in 1856, major repairs took place between 1990 and 2004. The La Trobe Reading Room is one of the library’s main attractions due to its visually amazing architecture. The lawn at the library’s front attracts hundreds of city folk each day, who gather for lunch or to enjoy the statues there. The library currently contains over two million books, as well as armor (盔甲) of Ned Kelly, a folk hero against the ruling class.