Good One- or Two-Sided Stadiums

I often wonder why, when building small stadiums, all four sides around a field of play are constructed to a low level, rather than just one or two sides to a higher level.

By only developing one or two sides, it allows for future expansion of new grandstands and for better sightlines for spectators in a 'proper' grandstand.

FC Braga's stadium is an excellent example only developing two sides of the ground:




On a smaller scale, there's also FC Basel's Rankhof stand/stadium




Any other good examples you are aware of?