2D - 3D

Parque Joan Miro / Parque de l'Escorxador in Barcelona has at it's entrances this beautiful tactile map for people with a visual handicap.
Like a common 2D drawing there are lines and hatches. But in this case these are three dimensional. The legend at the bottom of the map uses the international Braille system.

See for location example of the map:
http://maps.google.nl/maps?q=parc+miro+barcelona&oe=utf-8&client=firefox-a&hl=nl&ie=UTF8&hq=parc+miro&hnear=Barcelona,+Spanje&ll=41.378769,2.149503&spn=0,359.961419&t=k&z=15&layer=c&cbll=41.378862,2.149379&panoid=uAYE2ImAb94_-y07d37WVA&cbp=12,197.02,,1,8.19