I have only been living in Switzerland for a few months.
I am wondering what type of trees these are

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2.

these flowers from Fribourg to Genève


And these Flowers

Canola (Raps)?

These are probably Plane trees
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2.


Japanese Almond


these flowers from Fribourg to Genève
Rape or Raps or Canola


And these Flowers: Wisteria

I think the crop of yellow flowers is rape ( used for rape seed oil, and for tilling back into the soil, possibly also as cow fodder.
The purple vine - not clear enough for me to be sure, but I think it is wisteria, rather than a lilac that has been trained into a vine form.

Not sure about the tree - they are common enough as street borders here and in other countries - is it a variety of plane? Pehaps a London plane ( Platanus Xhispanica) Take another photo once it has this years leaves - I think they will be big, with three pointy edges, a bit like a maple leaf. http://www.flickr.com/photos/xtinalamb/406815059/

No idea about the pink bush.

I agree to everything except the little tree. We have lots of them around here. They are the first trees to blossom around late March. Maybe they are Chinese almond trees, as suggested above, but in summer all of them bear Japanese cherries.

Wisteria (in German a.k.a. Glycine / Glycinie) is the plant that bears 100,000 petals per vine meter, but three weeks later you must wipe up half a million of them sticking to the wet terrace. Byoootiful to look at but a chore.

These days much of the rapeseed oil is used to make bio fuel.

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I didn't know the type of tree in the first picture, but they do look like they've been pollarded http://en.wikipedia.org/wiki/Pollarding

Correct, and that's a technique often done on plane trees, which you can find most often on waterfronts, boulevards and the like. For the Americans among us, American plane trees are what you call sycamore.

Pollarding is used not only to achieve a very dense foliage but also to keep the size if the tree at bay. Planes can grow very big. There's an unpollarded one in the front yard of a hotel here that can easily cover a wedding reception with 150 people, tables included, and they have to regularly prune it down on two sides in order to keep the streets free for trucks.

__________________

"This is AMAZING! I have the exact amount of money Joe Biden has cost us playing golf in my sweatpants pocket!" — Kona Lowell