And finally, I found it.

I still had the picture of the Justizpalast on my mind. I wanted to do it.

I was searching in the web, and decided to look at an article about one of the search results, "JVA Moabit". I got the coordinates and went to Google Earth. I saw this:
And, using archive from 1943/45 and then 1953.

In the first picture, Justizpalast would have been located in the lower right, southeast from the star-shaped building. The facility in the upper left is the Kriminalgericht Moabit, built between 1902 and 1906. In the second, you can see the Justizpalast as seen from a US aircraft in 1943/45 (the pictures are combined in the 1945 archive), before the respective bombings, and 1953. Although the quality in the 1943 photo is not good, you can notice both the Justizpalast and the star-shaped facility. In the picture from 1945 (upper right), you can see a slighty bomb-damaged building.
In the 1953 photograph, you can see the empty space where the Justizpalast once stood. The star-shaped building survived both bombings.
I must say that the 3d building size may not be accurate, however, I have tried to keep the building in the right proportions.

Königsberg Castle

Place of coronation of two Prussian Kings (Frederick I as King in Prussia and Wilhelm I, future German Emperor), by 1861 the Königsberg Castle was more than the walls and towers of the once Teutonic fortress. When Wilhelm I was coronated, the castle had incorporated the old defensive walls dating back from the Teutonic period (15th century), the Brick Gothic church (Schlosskirche) from 1594, the "Blood Court" (Blutgericht), a wine cellar built in the late 14th century, and some recent structures from the 18th and 19th centuries.

Konigsberg Castle: Brick gothic church and tower (middle), Blutgericht (right)

The Haberturm was the oldest tower (built ca. 1255) of the castle. It was the northeastern tower of the Schloss and a distinctive part of it, being visible from the other bank of the Schlossteich (Castle pond).

The castle contained also the Prussian Collection, with exhibits from the Prussian State Library and many art works.

All of this burnt down after the savage attack carried out by RAF in August 1944 - more than 800 airplanes bombed the city centre. Minor bombings by the Soviet air force, and later the Battle of Königsberg further damaged the castle. After the war, the Altstadt was no more than some destroyed buildings, the Königsberger Schloss and the shell of the Cathedral.

Königsberger Dom (Cathedral) as seen from the ruined Castle, 1949.

Despite all, the Castle walls remained standing. The end definetely came in 1968, when USSR leader Leonid Brezhnev decided to delete any sign of German past. The Schloss survived the first blast, - as a last showing of defiance to the Reds - that only torn down the brick gothic tower. A second explosion erased from Earth the remaining parts of this jewel (called "a symbol of Prussian fascism" by the Soviets, as other palaces like the Stadtschlösser in Berlin and Potsdam. The same they said, the same they did).

I have tried to make it the most accurate as possible, using a ground plan of the castle. The geometry work was the easy part - texturizing it was the difficult one. Although I could find many photos of the east, south and western parts, and three photocromes (Südseite, Ostseite and courtyard), I did not found pre-war photos of the northern side, for them I reviewed pictures displaying the ruined building.

Hope you like it.