London demands your full attention—and it'll reward you handsomely. This four-day adventure slices through the city's core, from medieval stone walls to sleek modern neighborhoods. You'll walk royal streets, trace 1,000 years of history, and experience a metropolis that pulses with global energy. Start at the Tower of London, where medieval stone walls whisper brutal stories of kings and prisoners. Nearby, Tower Bridge offers postcard-perfect views of the Thames. Westminster Abbey and Parliament showcase British political heritage, with Gothic spires and centuries of governmental drama just steps from each other. The city's neighborhoods tell complex stories. Brick Lane buzzes with Bangladeshi restaurants and street art. Notting Hill's pastel townhouses and quirky shops feel worlds away from the financial district's glass towers. You won't just see London—you'll understand its layered, dynamic character. Museums are excellent and often free. The British Museum's global artifacts tell stories of empire and exploration. The Tate Modern transforms an old power station into a temple of contemporary art. Each gallery, each street corner reveals another slice of London's remarkable character.