The Palace of Westminster, home to the UK Parliament, dazzles with its Gothic Revival style. Dating back to the 11th century, it houses Big Ben and is a UNESCO World Heritage site.
Location: London SW1A 0AA, United Kingdom
Opening hours: 9am to 5pm, Monday to Friday
How much time you should spend: 1 to 1.5 hours
Fun fact: A devastating fire in 1834 wiped out most of the palace, but the iconic Westminster Hall survived—it is still standing as one of its oldest treasures.