sorry for lateness but here is the full list of Budapest 
Hungary, Budapest (Completed)
+ Buda Castle
+ Parliament
+ Heroes’ Square (Hősök tere
+ St. Stephen’s Basilica
+ Matthias Church
+ Fishermen’s Bastion
+ St. Anne's Church
+ Chain Bridge
+ Széchenyi Thermal Bath
+ Hungarian State Opera House
+ Margaret Island
+ Shoes on the Danube Bank
+ Central Market Hall
+ Vajdahunyad Castle
+ House of Terror
+ Danube Promenade
+ Kossuth Lajos square
+ Museum of Applied Arts
+ Budapest-Nyugati Railway Terminal
+ Ethnographic Museum
All these places are stunning. and beautiful specially the area behind Hero Square.
Do keep a wide angle lenses if you can as some of the places and buildings are so big its impossible to capture without a super wide.