The northern entrance to this assemblage of pedestrian streets is through Hadrian's Gate, which is in itself quite a landmark of Antalyan antiquity. Built in 130 AD, these arches were built for Emperor Hadrian's procession and are the main way for you to less-conspicuously enter. The northern section is popular for its novelty shops (mass-produced t-shirts and the like) and a barrage of hostels in renovated Ottoman houses. Head west to see the area's most breathtaking landmark, the 125 foot minaret attached to the Yivli Minare Camii, or south past the marina to the circular, stone Hıdırlık Tower, which has served as a fortification in the past. Even if you weren't to pursue these landmarks, the cobblestone and sidewalk cafe vibe of the district is appealing in itself and is conducive to a day of wandering blissfully with the sea in view and the shadow of Olympos looming beyond it.
Note:It should also be noted that the biggest concentration of bars and pubs (by far) in Antalya is located in Kaleici. Just wander about the northern end of Pasa Camii Sokak and you'll hit about a dozen. If this doesn't do it, then head northwest a few blocks and you'll be in selçuk mahallesi, a twisting avenue of live music cafes and even a club or two for our happy-footed travelers.