The Shard is an instantly recognizable building in the London Skyline, a 95-story skyscraper in Southwark. It's the tallest building in UK which means you can see some great views of London if you take time (and say bye bye to cash) to visit.
The Shard offers various experiences and you can enjoy the view by visiting any of several restaurants and bars or paying to go to the observation floor. "The View From The Shard" - The cheapest price is about 16 pounds if you reserve ahead of time online.
Even if you don't go up, it's still a cool building it pick out as you walk through the city. At night time they will often do a laser show. I know this because I overhead a grandmother tell her grand children as we roamed the streets. I promise I wasn't eavesdropping, we were close and she spoke loudly!!
Always keep an eye out for cook architecture and buildings. This other building had a neat light display that kept changing colors.