The Belem Tower is a UNESCO World Heritage site. It was built in the 16th century as a defensive tower that protected the city from invasion from the river. The tower is a prime example of the Manueline style of architecture in Portugal. Visitors can climb to the top of the tower for stunning views of the city and the Tagus River.
The Jerónimos Monastery is another UNESCO World Heritage site in Lisbon. It was built in the 16th century in the Manueline style of architecture. The monastery contains the tombs of Vasco da Gama and Luís de Camões, two of Portugal's most famous historical figures. Visitors can also explore the church and the cloisters.
Pasteis de Belem is a famous bakery in Lisbon that has been around since 1837. They are known for their pasteis de nata, a delicious egg tart pastry that is a must-try in Portugal. The bakery is large and can get crowded, but it's worth the wait to try their delicious treats.
Ribeira Square is located in the heart of Porto and is a UNESCO World Heritage site. The square is surrounded by colorful buildings and is a great spot for taking photos. Visitors can also take a stroll along the river or enjoy a drink in one of the many cafes and restaurants in the area.
Livraria Lello is a beautiful bookstore that is known for its stunning interior. The bookstore was a favorite spot for J.K. Rowling when she lived in Porto, and some say that it inspired the Hogwarts Library in the Harry Potter books. Visitors can explore the bookstore and take photos of the spiral staircase and stained-glass window.
Porto is known for its delicious port wine, and visitors can learn about the history and production of this wine at the Port Wine Cellars. The cellars are located in Vila Nova de Gaia, across the river from Porto, and offer tours and tastings of different types of port wine.
If you have more time in Lisbon, consider visiting the Castelo de Sao Jorge or the National Azulejo Museum. In Porto, the Bolhão Market and the Porto Cathedral are worth a visit. If you have less time in either city, consider skipping the Belem Tower or Pasteis de Belem in Lisbon, or the Port Wine Cellars in Porto.