King Felipe VI and Queen Letizia of Spain Visit Mexico - Day 2 at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico. The Spanish Monarchs are in their second state visit since the proclamation of Felipe VI as Spanish King last June 19th of 2014.

Queen Letizia walks during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during the encounter with the Iberoamerican Alliance for Rare Diseases at Presidente Hotel on June 30, 2015 in Mexico City, Mexico.

King Felipe VI of Spain (L) and Mexican President Enrique Pena Nieto shake hands after a meeting with Mexican and Spanish businessmen at a hotel in Mexico City, on June 30, 2015.

King Felipe VI (C) of Spain shakes hands with Miguel Barbosa (R), president of the Mexican Senate, next to Queen Letizia (L), in Mexico City, during an official visit, on June 30, 2015.

King Felipe VI of Spain gives a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

King Felipe VI of Spain gives a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

Queen Letizia (L) and King Felipe VI of Spain (R), look on after a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

King Felipe VI of Spain gives a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

Queen Letizia looks on during a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

King Felipe VI of Spain gives a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

Queen Letizia (L) and King Felipe VI of Spain (R), sign the guestbook after a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

Queen Letizia (L) and King Felipe VI of Spain (R), sign the guestbook after a speech aimed to the members of Mexican Senate at Senate on June 30, 2015 in Mexico City, Mexico.

King Felipe VI of Spain gives a speech during a visit to the Universidad Nacional (UNAM) at UNAM's Simon Bolivar Amphiteatre on June 30, 2015 in Mexico City, Mexico.

King Felipe VI gives a speech during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

King Felipe VI gives a speech during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

King Felipe VI claps during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

King Felipe VI poses during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

Queen Letizia listens a speech given by Felipe VI during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

Queen Letizia listens a speech given by Felipe VI during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

Queen Letizia listens a speech given by Felipe VI during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico

King Felipe VI (R) and Queen Letizia (L) clap during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

Queen Letizia talk during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.

King Felipe VI talk during a meeting with members of the Spanish Community at Hospital Espanol on June 30, 2015 in Mexico City, Mexico.