Colombia's capital is Bogotá, where Spanish is the official language and the peso is the currency. Some interesting facts about Colombia include that the islands of San Andrés and Providencia feature the Sea of Seven Colors, Colombia is home to the most poisonous frog in the world, and Bogotá hosts over 300 monthly events along with 57 museums and 62 art galleries. Popular Colombian foods include tray paisa, fried fish, and ajiaco, and top tourist sites are Monserrate, the Botanical Garden José Celestino Mutis, Plaza de Bolivar, and the unique underground Salt Cathedral carved entirely out of salt.