King Felipe VI and Queen Letizia of Spain attended the Mass at Barcelona's Sagrada Familia basilica for the victims of the terror attacks that killed 14 people and wounded more than 120 on August 20, 2017

(2nd R-L) Spain's King Felipe VI and Spain's Queen Letizia and Portugal's President Marcelo Rebelo de Sousa stand at Sunday's mass

Spain's King Felipe VI (R) and Spain's Queen Letizia (C) and Portugal's President Marcelo Rebelo de Sousa attend a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia basilica in Barcelona on August 20, 2017. Hundreds of people gathered in the Sagrada Familia basilica for Sunday's mass. Among them were family members of the victims.

People attend a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spanish King Felipe VI (R), Queen Letizia (C) and president of Portugal Marcelo Rebelo de Sousa during a mass for the victims of the Barcelona terror attack at the Sagrada Familia Cathedral in Barcelona

Spain's King Felipe VI and Queen Letizia speak with president of Portugal Marcelo Rebelo de Sousa (not seen) following Sunday's mass - August 20, 2017

Spain's King Felipe VI (right) and Queen Letizia (center) say goodbye to the metropolitan archbishop of Barcelona, Joan Josep Omella

Spain's King Felipe VI and Spain's Queen Letizia attend a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's King Felipe, left and Queen Letizia wait with Catalan regional President Carles Puigdemont, 2nd from right and Spanish Prime Minister Mariano Rajoy, right (not seen) after leaving the mass

Spanish King Felipe VI greets Catalonian Vice President Oriel Junqueras (left) as he arrives for Mass

Spain's King Felipe VI (center), Spain's Queen Letizia (right) and Portugal's President Marcelo Rebelo de Sousa (left) were among several dignitaries who attended Sunday's Mass - August 20, 2017

 

Spain's King Felipe, center and Queen Letizia, center right arrive to attend a solemn Mass at Barcelona's Sagrada Familia Basilica for the victims of the terror attacks

Portuguese president Marcelo Rebelo de Sousa, King Felipe of Spain and his wife Letizia are seen leaving after the High mass in the Basilica of the Sagrada Familia

Spain's King Felipe VI waves as he leave the Sagrada Familia church after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, in Barcelona on August 20, 2017.

(L-R) Portuguese President Marcelo Rebelo de Sousa and King Felipe of Spain with his wife Queen Letizia are seen before the High mass

Spain's King Felipe VI and Spain's Queen Letizia arrive for a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's Queen Letizia greets Portugal's President Marcelo Rebelo de Sousa upon his arrival for mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spanish king Felipe VI (L) stands next to Spain's Queen Letizia signing the condolences book for the victims of the Barcelona and Cambrils attacks in the Salo de Cent of Barcelona's City Hall on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spanish Queen Letizia stands next to Spain's King Felipe VI signing the condolences book for the victims of the Barcelona and Cambrils attacks in the Salo de Cent of Barcelona's City Hall on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI and Spain's Queen Letizia attend a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's King Felipe VI and Spain's Queen Letizia attend a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's King Felipe VI and Spain's Queen Letizia leave after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's King Felipe VI (R) and Spain's Queen Letizia (C) speak with Archbishop of Barcelona, Cardinal Joan Josep Omella (C-L) as they leave after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's Queen Letizia waves as she leaves the Sagrada Familia church after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, in Barcelona on August 20, 2017.

Spain's King Felipe VI puts a hand over his chest as he and his wife Queen Letizia walks through Barcelona's Sagrada Familia basilica on Sunday morning - August 20, 2017

The Mass was held at Barcelona's iconic Sagrada Familia basilica, the unfinished Art Nouveau masterpiece of architect Antoni Gaudi that is a symbol of European Christianity. With its soaring towers, intricate sculptures and stained glass windows, the 'Holy Family' church is dedicated to the Christian concept of family and faith. It was begun in 1882 and is not expected to be finished until 2026

Spain's King Felipe VI (R) and Spain's Queen Letizia (C) speak with Archbishop of Barcelona, Cardinal Joan Josep Omella (C-L) as they leave after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.



Spain's King Felipe VI and Spain's Queen Letizia wave as they leave after a mass to commemorate victims of two devastating terror attacks in Barcelona and Cambrils, at the Sagrada Familia church in Barcelona on August 20, 2017.

Spain's King Felipe VI (C) and Spain's Queen Letizia (R) lay a wreath of flowers for the victims of the Barcelona attack on Las Ramblas boulevard next to Barcelona's mayor Ada Colau, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100. Drivers have ploughed on August 17, 2017 into pedestrians in two quick-succession, separate attacks in Barcelona and another popular Spanish seaside city, leaving 14 people dead and injuring more than 100 others.

Spain's King Felipe VI (C) and Spain's Queen Letizia (R) lay a wreath of flowers for the victims of the Barcelona attack on Las Ramblas boulevard next to Barcelona's mayor Ada Colau, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (C) and Spain's Queen Letizia (R) lay a wreath of flowers for the victims of the Barcelona attack on Las Ramblas boulevard next to Barcelona's mayor Ada Colau, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (2ndL) and Spain's Queen Letizia (2ndR) pay tribute to the victims of the Barcelona attack on Las Ramblas boulevard next to President of Catalonia Carles Puigdemont (L) and Spanish vice-President of the Government and Minister of the Presidency and of the Regional Administrations Soraya Saenz de Santamaria, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L) and Spain's Queen Letizia (R) lay a wreath of flowers for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L) and Spain's Queen Letizia hold a candle for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L), Spain's Queen Letizia (C) and Spanish vice-President of the Government and Minister of the Presidency and of the Regional Administrations Soraya Saenz de Santamaria hold a candle for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L) and Spain's Queen Letizia (R) display a candle for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L) and Spain's Queen Letizia (2ndL) lay a wreath of flowers for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.

Spain's King Felipe VI (L) and Spain's Queen Letizia (2ndL) display candles for the victims of the Barcelona attack on Las Ramblas boulevard, in Barcelona on August 19, 2017, two days after a van ploughed into the crowd, killing 13 persons and injuring over 100.