A photo illustration - the portal on sight may have slight
structural differences.
Portal is a general term describing an opening in the walls of a
building, gate or fortification, and especially a grand entrance to
an important structure. Doors, metal gates or portcullis in the
opening can be used to control entry or exit. The surface
surrounding the opening may be made of simple building materials or
decorated with ornamentation. The elements of a portal can include
the voussoir, tympanum, an ornamented mullion or trumeau between
doors, and columns with carvings of saints in the westwork of a
church.
Source: wikipedia
As most other historical and architectural landmarks, also
Haukeland has a spectacular portal. Hords of tourists come from far
and near to see this, so please be careful when you pick the
cache!