Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A lush indoor jungle fills this bustling Madrid transportation hub.

Building owners can take out tiles for free at this repository for historic building materials.

Commemorating the first recorded car journey in the United Kingdom, a 56-mile trip that defied the speed limit the whole way.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

Ancient catacombs form the foundation for this Rococo orgy of a church.

A scientific observatory managed the largest Portuguese astronomy research unit.

A small but charming botanical garden that contains many exotic plant species.