4St. Paul’s Cathedral, England

St. Paul’s Cathedral in London is an iconic Baroque masterpiece designed by Sir Christopher Wren. Completed in the 17th century after the Great Fire of London, its magnificent dome dominates the city’s skyline. The interior features the Whispering Gallery, known for its unique acoustics, and numerous chapels and memorials, including the tombs of Admiral Nelson and the Duke of Wellington. The cathedral’s grandeur and historical significance make it a must-visit landmark.