Indicative rates, not an offer. Averaged from real buy and sell prices.
Spain uses the euro (EUR). US dollars, British pounds and Swiss francs are exchanged most often, and in the south, Moroccan dirhams as well. Madrid and Barcelona have the most offers, followed by Valencia, Seville, Málaga and Bilbao.
Exchange offices operate at airports, stations and in tourist areas, especially on the coasts and islands. P2P offers in Spain cover cash swaps of US dollars and euros as well as USDT and USDC exchanges.
Below are exchange offices from open sources.