REMOVE

1. Signs and signboards -- Germ …

WHAT

1. Architecture -- 1700-1800 (4)
2. Architecture -- 1900-2000 (6)
3. Architecture -- 2000-2100 (4)
4. Architecture -- Germany (11)
5. Berlin Wall, Berlin, Ger … (11)
6. Checkpoint Charlie, Berli … (5)
7. Dark tourism (14)
8. Death tourism (2)
9. Doorways (1)
10. Graphic Design (1)
11. Heritage tourism -- Germ … (17)
12. Holocaust memorials -- Ge … (5)
13. Holocaust, Jewish (1939-1 … (5)
14. Maps (1)
15. Memorials -- Germany (6)
16. Museums -- Germany (6)
17. Street signs (1)
18. Tourism (4)
19. Tourist attractions (5)
20. Tourists -- Behaviour (1)
21. Towers (1)
22. Walls (5)
23. World War, 1939-1945 -- C … (1)

WHERE

1. GERMANY (18)
2. Berlin (16)
3. Dachau, Bavaria (1)
4. Heilbronn am Neckar, Bade … (1)

WHO

1. not known (13)
2. LIBESKIND, Daniel (5)

WHEN

1. 1961 (11)
2. 2003 (4)
3. 1933 (1)
4. 2008 (1)