Especially I like the one from Thailand.
The Drachenburg in Germany I must say I am very happy I never had to live in a place like that. There are castles which are so much more attractive.
Potsdam again: the "Steam Pump House" (Dampfmaschinenhaus), is disguised within a building designed in the style of a mosque. It was used to pump the water from the Havel river up to the system of fountains in Sanssouci park.