横跨圣劳伦斯河下游的魁北克大桥，加拿大 Quebec Bridge across the lower Saint Lawrence River, Canada (© Ronald Santerre/Getty Images)

横跨圣劳伦斯河下游的魁北克大桥，加拿大 Quebec Bridge across the lower Saint Lawrence River, Canada (© Ronald Santerre/Getty Images)

工程学杰作 A masterpiece of engineering

魁北克大桥，加拿大

魁北克大桥是一座跨越圣劳伦斯河下游的公路、铁路、行人三用桥，连接加拿大魁北克省的桑特富瓦和莱维斯。魁北克大桥是一个工程学杰作，两座桥墩之间有549米长的主跨。魁北克大桥是世界上最长的悬臂桥，比苏格兰的福斯桥还长了27米。

1907年8月29日，这座桥在建设过程中垮塌了。事故之后，政府接手了建设工程。1913年，大桥的建设重启。新的设计增加了大桥主要应力结构的横截面面积，几乎是之前的2倍。但是悲剧重演了。在经历了两次悲剧后，魁北克大桥最终在1917年完工通车。

Asian American and Pacific Islander Heritage Month

This stunning structure is the stone pavilion housing the massive Korean Bell of Friendship in Los Angeles, a city with a large Korean American population. It's ringing in Asian American and Pacific Islander (AAPI) Heritage Month, which starts today. The month was chosen in recognition of the first documented arrival of Japanese immigrants, on May 7, 1843, and the completion of the transcontinental railroad by more than 20,000 Asian immigrants on May 10, 1869.

Back to that intricately decorated bronze bell. It was a gift to the city from South Korea to mark the US bicentennial in 1976 and is modeled on the largest bell cast in Korean history, the Divine Bell of King Seongdeok, made in 771. Both versions are among the largest bells in the world.