Valaskjálf, with Hliðskjálf

Valaskjálf is Odin’s hall, decked with silver by the kind powers and, in Gylfaginning, roofed with pure silver. Inside stands the high seat Hliðskjálf: when the All-father sits there he can see over the whole world. The entry adds that other sources put others in the seat, Odin and Frigg watching their foster sons, Freyr looking into Jötunheimr. Watchfulness here is a wide view from above rather than a guard at a gate.