Visiting Dusseldorf - Inputs Please?

Dear Everyone,

I am scheduled to be visiting Dusseldorf on Business for 5 days. I will not get time to see much as only 2 or 3 evenings would be available to me after working hours.

Still kindly advise the following & Oblige:

1. Any specific caution I should take in freely roaming & shooting around Dusseldorf?
2. Any specific places recomended for visiting only for the purpose of shooting?
3. Is it generally safer in Dusseldorf area?
4. Any area's banned for shooting specifically?

(Remember I am a colord guy form a 3rd world country which everyone now a days loves in West to spend time with)

I am mainly interested in street photography, Churches, Old Buildings and things like these.

Please throw some light on above issues & share your experiences if any?

Thanks,
Anuraag (India)

Canon EOS 7D
EF-S 10-22 USM,
EF-24-105 L f/4 IS USM,
EF-70-200 L f/4 IS USM and
EF 50 f/1.8 II,
Speedlite 580 EXII,
Manfrotto 055CXPRO3 legs
Gitzo Ball head