38. Old St. Paul’s Cathedral, London

Built In 1087 And Destroyed In 1666
This medieval Gothic masterpiece dominated London’s skyline for centuries. Rebuilt after earlier fires, it featured a massive spire and intricate stonework, serving as a central religious and social hub.
The Great Fire of London in 1666 engulfed it, leading to its collapse. Sir Christopher Wren’s redesign replaced it, but the old cathedral’s loss marked a turning point in the city’s architectural history.