The park in the middle of Budapest (Városliget) is interesting.
The memorial to the 1956 uprising against the Soviets shows sparse rusted iron bars getting increasingly closer together and taller until it ends up as a solid block. Sometimes these modern monuments are lame, but I feel this one works. It's saying something about strength in numbers.
In the middle of the park is Vajdahunyad Castle. It covers a lot of ground and spans different styles. Interestingly, it was originally made of cardboard so Christ Church Cathedral is in good company.
I then had some palacsinta (pancakes) and wandered back through the city to my hotel.
Every European city seems to have one of these gates ripped off from Berlin. I suggest it be called a random burg gate.