which is this place vs where is place

Some examples from the web:

• Or they're poor and desperate, which is why this place is here.
• No, except that I've been renovating my house because of storm damage, which is why I rented this place.
• I just found out Madonna's about to leave, which means this place is going to clear out in, like, four minutes, six tops.
• I shall be stating that my water was cut off, which is why this place stinks the way it does.
• This House must cease to be a parliament of the insatiable, or else serious damage will be done to democracy, which is what this place is all about.
• There is a motto which is used around this place: if you do not succeed, redefine success.
• Technically, I can't be evicted from a hospital, which this place is, after all, unless a medical doctor releases me from treatment.
• It concerns a reference made yesterday by the President on the change of business which is taking place this week.
• They have divisions over Europe and it is overshadowing their conference which is taking place this week in Manchester.
• Now, this man doesn't need to go to a place like this, which is also - this place, this arena, which is built like a Greek amphitheatre, is a place for ecstasy also.
• There has been a lot of comment about the pressure under which this debate is taking place.
• Indeed, we are entering the final straight with the Poznań Conference, which is taking place at this very moment.
• However, there is immediately a dimension that is clearly lacking from our examination of the situation today, and that is the context in which this debate is taking place.
• Which means this is the only Place where you can yell at me.
• In which Member States is this taking place?
• In which Member States is this taking place?
• Mr President, although I agree with many of the comments that have been made today about the year 2001 having been reasonably successful, there are real grounds for concern about the way in which this debate is taking place today.
• Member States may demand that documents be classified and, into the bargain, require that they not be recorded, without it being made clear which rules this is to take place under.
• The EU is currently in the process of gathering information from all relevant stakeholders on the implementation of the intra-Palestinian reconciliation agreement as well as on the opening on 28 May 2011 of the RCP, including the modalities under which this is taking place.
• But let us stop to consider the circumstances in which this debate is taking place and the conclusions to which it should bring us.

Some examples from the web:

• I don't know exactly where is my place.
• Okay, where is this place?
• Where is your place, anyway?
• All right, where is this place?
• Where is this place, anyway?
• Where is this place, hyung?
• Nobody can tell you where your place is.
• Areas where drilling is taking place include Boxtel and Haaren.
• Where is this place, anyway?
• For myself I am tough - Dude, where is this place?
• So where is my place, Mr. Miller?
• - Where is a place to have a drink?
• I know where that place is.
• So take a step back and ask yourself where your place is in all of it.
• Where is the safest place in the station?
• You don't look like the kind of man who would know where this place is.
• where is that sausage place that Kevin loves?
• Now, we don't have an address, but we're trying to find out where this place is.
• Let's just say I do know where this place is.
• You know where that place is?