The capital of the Segrià region is Lleida, the largest town in the region and with an impressive set of monuments. Its most important architectural attractions include impressive buildings such as the Seu Vella the Palau de la Paeria (an example of the best Catalan civil Romanesque style), the churches of Sant Llorenç and Sant Joan and the Catedral Nova. Other points of interest are the Templar castle of Gardeny and the Espai Natural dels Tossals d'Almatret, near the Riba-roja reservoir.
The region of Les Garrigues is particularly interersting for its cave paintings in Cogul and the Museu Arqueològic of Les Borges Blanques, as well as for the ethnological museums in Juneda and Castelldans.
History has left its mark on the region of Segarra, in the shape of the prehistoric remains at Sant Guim de Freixenet, the ancient Roman city of Iesso in Guissona, the Romanesque sites in the capital, Cervera, and in Vallferosa, the Jewish quarter in Torà, etc. The natural area of Espai d'Interès Natural Vall del riu Llobregós is also well worth a visit.
Romanesque art has also made its mark beyond the Lleida Pyrenees. The Romanesque Route enables visitors to get a close view of sites such as the collegiate church of Sant Pere d'Àger (Noguera); the church of Sant Esteve de Palagalls (Segarra); the Seu Vella, the church of Sant Martí and Palau de la Paeria (Segrià); the monasteries of Vallbona de les Monges and Santa Maria d'Agramunt (Urgell), and Vinaixa church (Garrigues).
The Castles Route tours former Christian fortresses that guarded the old border with Muslim territory that existed before Catalunya Nova was conquered. It includes Mur, a Pyrenean castle in Pallars Jussà, and the castles of Verdú, Arbeca, Montsonís, Montclar, Florejacs, Les Pallargues, Vicfred, Concabella and Formós, as well as other valuable sites and monuments. The last six fortresses make up a separate route, known as the Sió Castles.
The area of Terres de Lleida also includes the work of modernist architects dating back to the early 20th century. Farming buildings worth visiting are the flour mill belonging to the Cervera farming syndicate (Sindicat Agrícola), the Verdú cooperative and the Ivars farming syndicate. The most important urban buildings are the Teatre Municipal de l'Escorxador and teh houses of Magí Llorens, Fregola and Melcior de Lleida; the Càrcer-Sobies house in Tàrrega, and the Xalet Montivo house in Balaguer.