Arrive in Barcelona and transfer from the airport to your hotel. The journey begins in Catalonia, looking towards the Mediterranean from a region with a distinct language and character. Broad avenues, Gothic lanes and the unmistakable curves of Catalan Modernisme root the opening firmly in Barcelona.

Begin around the Gothic Quarter, drift into El Born, or continue to Barceloneta as the afternoon eases. A cathedral square, a shaded lane and a glimpse of blue at the end of a street are enough for the first day. Iberia begins here in a Catalan accent.

Move through Barcelona before visiting the Sagrada Família, where Gaudí turned faith, geometry and nature into one of Catalonia’s most recognisable architectural statements. The basilica feels entirely of this place, rooted in the cultural confidence that distinguishes Barcelona from the inland capitals still to come.

Later, Passeig de Gràcia continues that architectural conversation through façades inventive even by Barcelona standards, while Gràcia offers smaller lanes and neighbourhood life beyond the grand avenue. Before Madrid brings the crown into view, Catalonia has already made its presence unmistakable through architecture.

Leave Barcelona for Girona and the Costa Brava, revealing two sides of Catalonia in a single day. Girona brings old walls, steep lanes and a historic centre built over centuries; farther on, the Mediterranean returns through coves, cliffs and coastal towns. Together, they stretch the Catalan story from fortified streets to open water.

El Born or the Gothic Quarter works well for a last Barcelona evening before the train turns inland. Madrid waits at Spain’s centre, with a palace and a very different claim to power.

Travel by train from Barcelona to Madrid and step into the political heart of Spain. The Royal Palace of Madrid brings the monarchy directly into the day, with ceremonial rooms and formal spaces reflecting the authority gathered around the Spanish capital.

Afterwards, wander through Plaza Mayor, continue into the Barrio de las Letras, or settle at a terrace around La Latina. The palace is only one layer of Castile’s story; tomorrow, Toledo and Segovia take you further back.

Leave Madrid for Toledo and Segovia, two cities that carry older Castile into the present. Toledo brings together Christian, Jewish, and Muslim histories within its compact streets, while Segovia adds monumental stone and long royal associations. Cathedral and Alcázar visits, with lunch along the way, take the day into the institutions and strongholds that helped define this part of Spain.

Return to Madrid with the capital placed in a longer perspective. Long before power settled there, Castile had already left its mark in fortified skylines, sacred spaces and cities built to endure.

Take the train from Madrid to Seville, where Andalusia changes the route's atmosphere. Courtyards, orange trees and warm-toned façades introduce a southern world where Islamic and Christian histories sit remarkably close together.

Walk through Santa Cruz, pause around Plaza de España, or follow the lanes down to the Guadalquivir as the heat begins to lift. Tomorrow, the Alcázar, cathedral and Giralda show how many eras Seville learned to carry at once.

Enter the Real Alcázar of Seville, where palace rooms, courtyards, and gardens preserve a site shaped by Muslim and Christian periods. Continue to Seville Cathedral and the Giralda, whose tower still carries the form of the minaret that preceded it, before the Church of El Salvador completes the day’s religious landscape.

Power and faith changed hands here, but architecture kept the evidence. Later, cross into Triana or return to Santa Cruz, where tiled façades, small squares and dinner tables bring Seville back to a more intimate scale.

Leave Seville by bus and cross into Portugal for Faro. The border alters the language first, then the architecture: white façades, quieter squares, a walled old quarter and the lagoon close to the historic centre. After the courts and cathedrals of Spain, Portugal enters with a softer southern rhythm.

Spend the afternoon around Cidade Velha or the marina, slipping through old gateways and streets that ask for very little planning. Faro’s smaller scale suits the evening, with Portugal now firmly on the page.

The peninsula's Atlantic edge appears through Benagil Cave, Praia da Marinha, and Carvoeiro. Limestone cliffs break into arches and caves, beaches sit between rock walls, and coastal streets replace the palaces and fortified cities that dominated the first half of the journey.

Returning to Faro, the marina or old town offers an easy close to the day. The same landmass that began beside the Mediterranean now faces a broader horizon.

Travel by train from Faro to Porto, crossing Portugal from its southern coast to a northern city of granite, blue tiles and steep streets above the Douro. Ribeira gathers tightly along the waterfront, while Vila Nova de Gaia rises opposite on the other bank.

Here, influence came through merchants, river traffic and wine. Walk down to Ribeira or take the Dom Luís I Bridge for the view towards Porto’s old façades. Tomorrow the Douro leads beyond the city to the landscape behind that wealth.

Travel into the Douro Valley, where vineyards climb in terraces above the river, and wine has supported the region for generations. Tastings and a local lunch form part of the day before a cruise carries you between cultivated slopes, estates and small settlements tucked into the hills.

In Porto again, head towards Vila Nova de Gaia if the evening draws you to the waterfront. The names on the bottles now belong to places you have seen.

Leave Porto by train for Lisbon, where the Tagus opens beneath a capital built on hills. Tiled façades, broad squares and older neighbourhoods rise above the waterfront, while Portugal’s royal and maritime past gives Lisbon an authority quite unlike the cities that came before it.

Walk through Baixa, climb towards Chiado, or let Alfama lead into narrower lanes as evening settles. Lisbon has always faced outward, and from its hills the west never feels very far away. Sintra waits for the final full day.

Travel to Sintra for Pena Palace and Quinta da Regaleira, where royal and aristocratic imagination takes theatrical form among wooded hills, towers, gardens and hidden passages. The day then continues to Cascais, exchanging palace grounds for a town facing the Atlantic before heading back to Lisbon.

The morning begins among palaces and the afternoon ends beside the coast. Príncipe Real or Chiado can take the last evening, allowing Sintra’s extravagance and Cascais’ open horizon to settle in their own time.