Spend your first day in one of the most vibrant neighborhoods in Lisbon, Bairro Alto. Get lost in its narrow streets and immerse yourself in the local culture. Make sure to visit the Miradouro de São Pedro de Alcântara for stunning views of the city. In the evening, head to one of the many bars in the area for a taste of Lisbon's nightlife.
Escape the city for a day and take a trip to the enchanting town of Sintra. This UNESCO World Heritage site is home to several must-see attractions, including the colorful Pena Palace, the mystifying Quinta da Regaleira, and the picturesque Sintra-Cascais Natural Park. Don't forget to visit the famous Travesseiros pastry shop for a delicious treat.
For your last day in Lisbon, head to the coastal town of Cascais. Take a surf lesson at Praia do Guincho, hike the Parque Natural de Sintra-Cascais, or rent a bike and explore the Ciclovia Marginal, a scenic bike path that runs along the coast. End your day at one of the many seafood restaurants in the area, such as Bar do Guincho or Azenhas do Mar.
If you have more time, consider adding a day trip to the stunning beaches of Algarve or a visit to the historic village of Óbidos. For a shorter stay, skip Sintra and spend more time exploring Lisbon's different neighborhoods like Alfama and Chiado. Don't forget to wear comfortable shoes and bring a light jacket, as Lisbon can get chilly in the evenings.