This issue, with probably the tallest ever Portuguese stamps, shows several public funiculars. It won the 2011 Asiago Philatelic Art Award in the tourism category, ex aequo with a Swiss set about the Basle carnival.
The Santa Justa lift (1901), the Glória (1885), the Bica (1892) and the Lavra (1884) funiculars are all in Lisbon, to help inhabitants cope with the hilly geography of the city. The Bica and Lavra funiculars are shown on the miniature sheet, which I don’t have.
The Guindais funicular (1891), in Porto, was closed for one century after a serious accident. The Santa Luzia funicular (1923), in Viana do Castelo, is the longest in Portugal. The Nazaré funicular (1889) provides a great view along its route. Most of the funiculars originally used a mechanism of water counterbalancing. The Bom Jesus funicular (1882), the first one in the Iberian Peninsula, is the world’s oldest still operating that way.
The stamps were designed by Eduardo Aires / Whitestudio, lithographed by Cartor on enamelled paper sheets of 5×5 stamps with perforation 13, and issued on 17 May 2010.
Reference: CTT press release, accessed 25 November 2014