原中国交通部办公大楼的建筑设计是哪里？

可以的, 只要你持有有效巴西签证就可以了. 不过西非国家去巴西比从中国出发近很多.
但是要注意转机的地方需不需要转机签证.
中国没有直飞航班去巴西的, 国航有航班去巴西,但是要在西班牙首都马德里停一下.不过你是不需要转机签证的.
你不需要, 只有下面的国民才需要机场转机签证.

Type A Visa (Transit through Airport) is Suitable For:

* Foreign nationals from Afghanistan, Bangladesh, Congo (The Democratic Republic), Eritrea, Ethiopia, Ghana, Iran, Iraq, Nigeria, Pakistan, Somalia and Sri Lanka intending to transit through international areas of the Spanish Airports, Ports and Ports of Call during stopovers without the right to access national territory, unless they are EU/ EEA/ Canada/ or USA residents.