Complex sentence: Only a few walls and substructures belonging to Lygos have survived to our date, near the Seraglio Point (Turkish: "Sarayburnu"), where the famous Topkapı Palace now stands.
Split into simpler sentences: Only a few walls and substructures belonging to Lygos have survived to the present. They are near the Seraglio Point (Turkish: "Sarayburnu"), where the famous Topkapı Palace now stands.