Earlier quoted context omitted.
"Our entire country (The Netherlands) measures roughly 161mi by 93mi.....Consequently it's impossible to get really lost" You aren't really lost until you aren't in the country you thought you were in. Its possible to lose yourself to Greece say, without crossing a hard border. So the area to get lost in is quite a bit bigger.
It's really obvious when you cross the NL/BE or NL/DE borders though, signage becomes different, houses look different. So unless you cross the border in a wooded area, you will definitely know.
Really? Just over the border? I would have thought cross pollination over the years would have rendered housing styles identical. Plus aren't there streets where one half is Dutch, the other half Belgian?
Edit: Like here for example