Plug Type: Type F (Schuko) — round two-pin plugs with grounding clips. Same as most of continental Europe.
UK visitors: Need a Type G to Type F adapter (widely available at airports and hardware stores).
US/Canada visitors: Need a Type A/B to Type F adapter and a voltage converter if devices are not dual-voltage (most modern phones, laptops and cameras are 100–240V and need only an adapter).
Australia/NZ: Need a Type I to Type F adapter.
USB charging: Most hotels provide USB ports at bedside. Power banks are recommended for all-day Alhambra visits.