Colosseum (Italian: Colosseo, English: Colosseum), formerly known as Flavium amphiaterum, has also been translated into Colosseum and Colosseum.

It was a place where slave owners, nobles and freemen watched fighting animals or slaves fight during the Roman Empire.

The stands of the Colosseum are supported by three concrete cylindrical arches, with 80 arches on each floor, forming three circular coupon corridors with different heights (that is, corridors supported by arch coupons), and the top floor is a solid wall with a height of 50 meters. The stands retreated step by step, forming a stepped slope.

80 arches on each floor form 80 openings, and the top two floors have 80 openings. When the audience enters, they will first find out which bottom arch they should enter according to the number of seats, then find their own area along the stairs and finally find their own seats.

The entire Colosseum can accommodate up to 90,000 people, but due to the thoughtful design of the entrance, there will be no crowding and chaos. This entrance design is still in use even in today's large stadiums.

2. Leaning Tower of Pisa

The leaning tower of Pisa (Italian: Torre pendente di Pisa or Torre di Pisa, English: lean Tower of Pisa) was built in August 1 173, which is the independent bell tower of Pisa Cathedral in Italy, located in the Miracle Square in the north of Pisa in Tuscany, Italy.

The leaning tower of Pisa is an important building in architectural history. Before the serious tilt, its bold circular architectural design has shown its originality to the world.

Although it is not uncommon to use circular foundations in Italian bell towers in early years, similar examples can be found in Lavaine, Tuscany and umbria.

However, the Pisa Bell Tower is considered to be independent of these prototypes. To a greater extent, the circular building was independently designed and developed on the basis of previous architectural experience, forming a unique pizza style.

For example, the circular design of the bell tower is considered to correspond to the reflection of the cathedral building on the side, so it deliberately imitates the arc design of the semi-circular back hall of the church.

More importantly, the bell tower is consistent with the emphasis on circular structure in the square, especially after the completion of the grand circular Baptist church, the whole square is more like the modern version of Anastasi in Jerusalem. This design is derived from classic ancient architecture.

3. St. Peter's Cathedral

St Peter's Cathedral is also called St Peter's Cathedral and Vatican Hall. Designed by Michelangelo, it is the Vatican's Pontifical Temple, which was built from 1506 to 1626 and is one of the important symbols of Catholicism.

The architectural style of St. Peter's Cathedral has obvious classicism advocated in the Renaissance, and its main feature is the combination of Roman dome with Greek columns and lintels.

St Peter's Cathedral is a rectangular church. The whole building presents a Latin cross structure, which is very traditional and sacred. It is also the largest church in the world at present.

The interior of the church is resplendent, dark and mysterious, made of marble. All the figures in it are made of marble of different colors, and the project is very huge. Shooting with tripod and flashlight is not allowed.

4. elizabeth tower

Elizabeth tower, formerly known as Big Ben, is the bell tower of Westminster Palace, one of the world-famous Gothic buildings, and also a landmark building in London.

Elizabeth tower was designed by Augustus Warebey Northmore Putin of Augustus Pugin, and built by Edward Dent and his son Frederick.

Elizabeth tower was installed on the bell tower in 1859. Elizabeth tower is the second largest clock in the world that faces four directions at the same time. The base of each clock face is engraved with the Latin inscription, "God, please protect the safety of our Queen Victoria I."

The clock weighs 13.5 tons, the dial diameter is 7 meters, the length of the hour hand and the minute hand are 2.75 meters and 4.27 meters respectively, and the pendulum weighs 305 kilograms. Elizabeth tower is a big clock, and its bell tower is located in the north of Parliament House in London, England. Elizabeth tower is famous for its accuracy and huge bronze clock weighing 13 tons.

5. Arc de Triomphe

The Arc de Triomphe in Paris, the Arc de Triomphe of Lions? Toile), located in the center of Charles de Gaulle Square in Paris, France, at the western end of Champs Elysé es.

The Arc de Triomphe in Paris is a representative building of royal style. The rise of this style is closely related to Napoleon's advocacy. Its rise and fall has always been closely linked with Napoleon's fate, and these buildings are inspired and exemplified by the magnificent buildings of the Roman Empire.

They are large in scale, simple in appearance, and pursue the grandeur, calmness and majesty of their images. The Arc de Triomphe in Paris takes the Arc de Triomphe in ancient Rome as an example, but it is larger in scale and simpler in structural style.

Except for the eaves, walls and wall foundations, the whole building has not been divided into any big sections, and there are no columns, even the buttresses have been removed, and there are no legs. The Arc de Triomphe abandoned the multiple arch ticket modeling of the Arc de Triomphe in Rome, and only set up one arch ticket, which was simple and solemn.

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