At first glance, the entrance to Topkapi Palace may seem unremarkable, but beyond its stone walls lie breathtaking courtyards, opulent rooms, and imperial spaces that showcase the lavish lives of Ottoman sultans in Istanbul. Serving as the first residence of the Ottoman rulers, the palace remained in use until the 20th century, when they relocated to the Dolmabahce Palace, which reflected the Western architectural influences of the era. Visiting Topkapi Palace is one of the top experiences in Istanbul, so take your time to explore its many wonders. In addition to the main attractions, don’t miss the intriguing harem. Afterward, unwind in Gulhane Park next door—a beautiful green oasis in the city that is not to be missed.