There are several real estate portals in Spain that serve as online marketplaces for properties. These portals provide buyers and sellers with a platform to search for, list, and purchase properties. Some of the most popular real estate portals in Spain include:

1. Idealista: One of the largest real estate portals in Spain, Idealista offers a wide range of properties, including apartments, townhouses, and villas. The platform provides detailed property listings, high-quality photos, and maps to help buyers find the perfect property.

2. Fotocasa: Fotocasa is another popular real estate portal in Spain, offering a comprehensive search engine for properties. The platform features detailed property listings, high-quality photos, and virtual tours, making it easier for buyers to find the right property.

3. Kyero: Kyero is a leading international real estate portal, with a strong presence in Spain. The platform offers a wide range of properties, including apartments, townhouses, and villas, and provides detailed property listings, high-quality photos, and virtual tours.

4. Habitaclia: Habitaclia is a popular real estate portal in Spain, offering a wide range of properties in different regions of the country. The platform provides detailed property listings, high-quality photos, and virtual tours, making it easier for buyers to find the right property.

5. Pisos.com: Pisos.com is another popular real estate portal in Spain, offering a wide range of properties, including apartments, townhouses, and villas. The platform provides detailed property listings, high-quality photos, and virtual tours, making it easier for buyers to find the right property.

In conclusion, real estate portals in Spain provide buyers and sellers with a platform to search for and list properties, making it easier to find the right property. With a wide range of properties and detailed property listings, these portals have become an important resource for those looking to buy or sell real estate in Spain.