4 Best Sights in The City, London

For centuries, this iconic building has represented London's spirit of survival and renewal, and it remains breathtaking, inside and out. Sir Christopher Wren started planning the current cathedral in 1666, immediately after the previous medieval building, founded in 1087, was destroyed in the Great Fire—hence the word resurgam ("I shall rise again") inscribed on the pediment of the south door. St. Paul's again became a symbol of the city's resilience during the Blitz, when local volunteers risked death to put out a blaze on the dome (despite these efforts, much of the cathedral's east end and its high altar were destroyed). It has often been the scene of great state occasions, such as Winston Churchill's funeral and the wedding of King Charles III and Princess Diana.

Construction started in 1675 and took 35 years to finish. It was actually Wren's third design: the first was rejected for being too modern; the second for being too modern and too Italian, that is, Catholic (you can see the 20-foot "Great Model" of this design in the crypt). Despite mollifying the Anglican clergy with the promise of a traditional English spire, Wren installed a neoclassical triple-layered dome, the second-largest cathedral dome in the world after St. Peter's in Rome.

The interior is a superb example of the English baroque. Climb 257 steps up the Geometric Staircase, a perfectly engineered stone spiral, to the Whispering Gallery, so named because a whisper against one wall can be heard on the wall 112 feet opposite. Another 119 steps up is the Stone Gallery, which encircles the exterior of the dome and provides panoramic views over London. If you have a head for heights, tackle another 152 steps to the small Golden Gallery, an observation platform at the dome's highest point. At 278 feet above the cathedral floor, it offers even more spectacular vistas. Back on the ground, in the south choir aisle, you'll find the grave of John Donne, the poet who was dean of St. Paul's from 1621 until his death in 1631. His marble effigy is the oldest memorial in the cathedral and one of the few to survive the Great Fire. The intricate lively figures on the choir stall nearby are the work of master carver Grinling Gibbons, who also embellished the Wren-designed great organ. Behind the high altar is the American Memorial Chapel, dedicated to the 28,000 American GIs stationed in the United Kingdom during World War II. Among the notables buried in the crypt are the Duke of Wellington, Admiral Lord Nelson, Sir Joshua Reynolds, Henry Moore, and Wren himself. The Latin epitaph above his tomb fittingly reads, "Reader, if you seek his monument, look around you."

Free, introductory, 20-minute talks are offered regularly throughout the day. Free, 60-minute, guided tours take place Monday through Saturday at 11, 1, and 2; reserve a place at the welcome desk when you arrive. Save £2.50 per admission ticket and get fast-track entry by booking online.

Nowhere else in London does history seem so vividly alive as in this minicity begun by the Normans more than 1,000 years ago. In its time, the Tower has been a fortress, a mint, a palace, an archive, and the Royal Menagerie (which formed the kernel of London Zoo). Most of all, however, it has been known as a place of imprisonment and death. Thousands of unfortunate souls, including numerous aristocrats and even a few sovereigns (some notorious traitors, some complete innocents), spent their last days here, several etching their final recorded thoughts onto their cell walls, and pints of royal blood have been spilled on its stones. Executions at the Tower were reserved for the nobility, with the most privileged beheaded in the privacy of Tower Green instead of before the mob at Tower Hill. In fact, only seven people received this dubious "honor," among them Anne Boleyn and Catherine Howard, two of Henry VIII's six wives.

The White Tower, the oldest building in the complex (which is actually made up of 20 towers, not just one) is also its most conspicuous. Begun by William the Conqueror in 1078 and whitewashed (hence the name) by Henry III (1207–72), it contains the Armouries, a splendid collection of arms and armor. Across the moat to the right is the riverside Traitors' Gate, to which the most famous prisoners were rowed to bring them to their impending doom.

Opposite is the Bloody Tower, where the "little princes in the Tower"---the uncrowned boy king Edward V and his brother---were consigned by their wicked uncle, who then took the crown for himself, thus becoming Richard III. The boys were never seen again, widely assumed to have been murdered in their tower prison. Also not-to-be-missed are the gorgeous Crown Jewels in the Jewel House. The original crown, orb, and scepter, symbols of monarchial power, were destroyed during the English Civil War; the ones you see here date back to after the Restoration in 1661. The most impressive gems were added only in the 20th century, when their countries of origin were part of the British Empire. Free 60-minute tours of the Tower depart every half hour or so (until midafternoon) from the main entrance. They are conducted by the Yeoman Warders, more popularly known as Beefeaters, who have guarded the Tower since Henry VII appointed them in 1485. Veterans of Britain's armed forces, they're easy to spot in their resplendent navy-and-red Tudor uniforms (scarlet-and-gold on special occasions). Keep an eye out for the ravens upon whose residency of the Tower, legend has it, the safety of the kingdom depends.

Avoid lines by buying a ticket in advance online, by phone, or from the automatic kiosks on Tower Hill. Tickets to the 700-year-old Ceremony of the Keys (the locking of the main gates, nightly between 9:30 and 10) cost £5 and should be booked online one or two months in advance; check the Tower website for details.

When the Millennium Bridge, located roughly halfway between Blackfriars Bridge and Southwark Bridge, opened to much fanfare in 2000, it became the first new pedestrian bridge across the Thames in over a hundred years. Now the steel suspension bridge (officially known as the London Millennium Footbridge) has become one of the city's most popular sights. Cross from the south bank and you'll have a first-class view of the rounded beauty of the dome of St. Paul's Cathedral fighting for space with the skyscrapers that surround it. Cross the river from the north side, and the epic sight of the Tate Modern and its towering chimney is the prize. Spend some time on the bridge itself by taking in the views and the water traffic up and down river, but don't forget to pay attention to its unique structure too. Between sunset and 2 am, it looks particularly beautiful thanks to its illumination by pulsing lights (eight other bridges up and down the river also join in for this light show). The bridge has also become known for its role in a particularly harrowing scene involving Death-Eaters in the sixth Harry Potter movie.

Originally founded in 1123 as part of an Augustinian monastery, this is one of the oldest churches in London and one of the city's few surviving Norman buildings. Although much of the church has been destroyed or demolished over the centuries, with restoration only beginning in the mid-19th century (it even saw use as a stable and a factory in the interim), it nevertheless remains perhaps the best preserved example of Romanesque architecture in London. Most notable are the 13th-century arch with a half-timbered gatehouse at the entrance and the fine Romanesque chancel, apse, and triforium at the east end of the interior. The artist William Hogarth was baptized in the font, which dates back to 1404. The redolent atmosphere has made it a favorite filming location, and you can see it in The Other Boleyn Girl, Four Weddings and a Funeral, and Shakespeare in Love, to name just a few.