At night you are not really safe in or around the station. Also it's easy to get lost in Leiden at night. Bring along a map or someone who knows the way. At brought daylight this is not really a problem at all.
Watch out at Den Haag Centraal train station. I had
my laptop bag stolen there while in the Burger King
there (well, I ran after these guys, kicked one of
them and he dropped it). They are really sneaky there -
you won't notice them in advance.
You can notice them if you sit down there for a while.
They are the people that walk around for hours, meet
another, talk a bit, but are not looking for a train
at all. Mostly younger ones.
Advise: Put laptops not in a laptop bag but in your
People here smoke. A LOT. In the taxis, everywhere. If you come from a smoke-free environment, be warned. To combat cigarette smoke, I always carry my favorite incense with me, and I'll light that in my hotel room instead of a cigarette.
You'll see a lot of eight food wide pathways with a yellow stripe down them. Do NOT stand in the middle of these!!!!!! A significant population of Netherlanders ride their bicycles everywhere, and these pathways are actually bike highways. And they do go fast! I was nearly run down three times before I figured out what was going on.
Watch your footing around the city. Many Netherlanders own dogs, and they walk them daily. It seems like many dogs poop on the sidewalk, and it doesn't get scooped
If you're on a low-fat diet, you're going to get a surprise. Many local restaurants appeared to boil all their food in butter. Safest bet for low-fat is to find a Japanese steakhouse (a la Benihana's) and eat there, as they don't use nearly as much fat.
If you're at a hotel with a breakfast buffet, be sure to smell the milk pitchers BEFORE pouring into your cereal. At least one of those pitchers is usually buttermilk.
If you're a big water drinker, stock up on large bottles as soon as you arrive. Netherlanders just don't drink water the way us Californians do. Your best bet to get a large quantity of water in a restaurant is to ask for a *beer mug* full of water.
Be very carefull when you want to go swimming in the sea! This might look as a silly remark since The Hague has two sea-side resorts, Scheveningen and Kijkduin. The sea along the Dutch coast is very dangerous because of the currents that will drag you further out to the sea or even under the surface. Observe the signs given by the life-guards (like flags). When there is a strong easterly wind bathing can be totaly prohibited! The safest is to never go further into the sea then where you can stand.
Don't ever pee on the streets you men! If the police catch you, you'll have to pay about 50 euro! So be warned. There are toilets enough.
I have tested this in the Groninger Museum and believe me, you ll feel haunted after trying so.
Use a high sensible film or your digital camera, with the latter you get good results as well.
This is our Tweede Kamer (second chamber), the dutch parliament. It meets right next to the Binnenhof in an ugly new building.