Known also as Constitution Arch the building was built in 1825-7 as part of a campaign to improve the royal parks. Today it serves a triumphal arch in the Hyde Park memorable landmark of the city for both locals and visitors. The Arch serves as a reminder of the victory Lord Wellington scored against Napoleon. The building is open for public and visitors can examine the history through three floors of exhibits. And if you like a good view just step onto one of the terraces and enjoy. And if you like to know more about the history of the Arch you can always buy the guidebook where everything is explained in details. On your visit you will get just a small glimpse into one of the most memorable buildings in London. The Arch is open Monday to Sunday from 10:00 to 18:00. Starting October 1 to November 2 opening hours will change to 10:00-17:00.