Without this adjustment, the image on the page appears to be off-center when compared with other pages in the booklet. This movement of the image on the page is referred to as creep, and each set of pages in the booklet with the exception of the first has a different amount of creep space added to its gutters.
Torre (Serra da Estrela) Torre (English: Tower) is the highest point of Mainland Portugal, and the second most elevated of the Portuguese Republic (only Mount Pico, in the Azores, is higher). This point is not a distinctive mountain summit, but rather the highest point in a mountain range.
Vasco da Gama Bridge, Portugal - 56,381 feet: Lisbon's Vasco da Gama Bridge is the longest in Europe, spanning a total distance of 10.7 miles. Taking three years to complete, the bridge opened for traffic in 1998 to celebrate the 500th anniversary of Vasco da Gama's discovery of the maritime route from Europe to India.