Foreign Owned Houses in Turkey
According to the Tapu ve Kadastro Genel Müdürlüğü (or to put it simply; "the department that looks after land-ownership in Turkey"), there are 81,321 properties in Turkey whose TAPU (title deed), is registered by a non-Turk, and in total the land the properties cover accounts for nearly 21 square miles of Turkey (about the same area as the borough of Manhattan).
Of these 81,321 properties, the two leading foreign owning nations are Germany and Britain., with about 23,000 and 19,000 registered properties respectively. So given how vast Turkey is, where do we all choose to have houses?
The 5 providences of Antalya, Aydın, Istanbul, Izmir, and Muğla, account for nearly all of the British property. Here's the break-down for British (and German), owned properties for these 5 provinces:

We can also look at other nationalities across these areas. It's interesting to see that the British tend to stay in Muğla!

And here's the breakdown of land ownership across the same 5 provinces:


