Windows--you can see through them, open or close them, or just admire their workmanship

Here are a few Czech windows, from my August 2017 trip there:

Abandoned house in Hradek, Susice

Reconstructed windows at Zamek Hradek

New window, old wall in Zamek Hradek

Great big hook to keep the window from banging shut when you open it outwards, in our room at Zamek Hradek

In Prague: from my tram--people waiting for their tram to arrive

Coat rack (with someone's Hello Kitty hat), open door to cellar, and sunny window in the breakfast room, Zamek Hradek