Anyone with children might be familiar with Imaginarium. This is a Spanish toy store with presence in many European countries.
The distinctive name, the shop itself and most of all the distinctive facade prevent that you forget about this store. The most distinctive (and fun) part of the store is the separate entrance for children next to the entrance for adults (see the picture).
These two entrances have been registered as a European trademark for toys and sales of toys. Imaginarium has recently added a second trademark registration to its portfolio: the entrance for building materials and transport. Probably the idea of Imaginarium was to have a defensive trademark registration, in case when the use for toys etc. would be disputed. Nevertheless, it is good to see that such strange but distinctive elements can be registered as a European trademark.