The European side of Turkey is mostly a series of rolling hills, while across the Bosporus Strait into central Turkey, the land rises into an elevated central plateau (Anatolian), surrounded by (and mixed with) high, rugged mountains, including the Taurus, Koroglu and Pontic ranges.
Many peaks in Turkey exceed 10,000 feet, and the tallest, most rugged ones, are found in the Eastern Taurus Mountains.
Turkey's highest point is Mt. Ararat which peaks at 16,948 ft. (5,166m),
Note: As a geological point-of-interest, the country is positioned on one of the planet's major fault lines, and earthquakes are rather common.