Real Madrid C.F.: Probably the most well-known tapas bar in Madrid, a must do. This is one of the most lively places in the city! Get beers, big glasses of wine or "un mini de mojito" and get free big plates of tapas.
Otel.com: This breathtaking Catholic cathedral is known for its 100 years of construction. After being postponed many times, it was consecrated in 1993. Amazing neo-gothic with modern design await inside.