La Sagrada Familia. This is a church in Barcelona which is being built on donations alone. The construction started in 1882 and it won't be completed until 2020 or later. The church was amazing because of all of the details.
We also visited Parc Guell in Barcelona. It was designed by Antonio Gaudi and it reminds me of a mix of Whoville in the Grinch Stole Christmas and Bedrock in the Flintstones.
Nice was very nice! We just walked along the beach, which was quite rocky, and did a little hike up to a look out.
Monte Carlo. There were tons of yatchs and we just took a quick look around and visited the Casino (stayed outside) and the Palace where Grace Kelly lived.