The 17th-century Banqueting House sits on Whitehall in Central London, and is widely considered the finest example of neoclassical architecture in the city. Once part of the Palace of Whitehall—and the site of one monarch's bloody demise—this national monument now welcomes visitors keen to admire its grand hallways and suites, as well as the spot where King Charles I was beheaded in 1649.
How to visit: Combine a trip to the Banqueting House with an exploration of Westminster Abbey on a private, half-day tour. There, admire features such as the bronze bust of James I and ceiling paintings by Flemish master, Sir Peter Paul Rubens.