If you—like many other London tourists—want an expansive view (and photo op) of the city, you might head to Tower Bridge. Strolling across the stone-and-steel bridge affords walkers an almost magical view of Londontown, especially as the setting sun blankets the city in warm light. If you're interested in viewing the city from a higher vantage point (about 138 feet), consider a tour of the Tower Bridge Exhibition. For a fee, this exhibit will take you to the top of the bridge, as well as to the bottom, with exhibits and displays on the bridge's inner workings and history. Adults pay £8 GBP (about $13 USD), youths ages 5-15 cost £3.40 GBP (approximately $5 USD), while children under 5 get in for free. Check the website for opening times. Keep in mind, most recent travelers recommend only doing this if you have time to kill or are extremely interested; a walk across the bridge is free and nearly as ambient. Hop off the Tube at Tower Hill to stroll across the Tower Bridge.