A cable car on the Duquesne Incline climbs a hill overlooking downtown Pittsburgh, Pennsylvania, on September 22, 2009. #

Trolleys and horse carts are shuttled up and down a hill on the Mount Adams Incline, sometime between 1900 and 1910, in Cincinnati, Ohio. #

Tourists travel on the NH Prague City Funicular to Mrazovka Park in Prague, Czech Republic, on November 24, 2017. #

A 2008 photo of the lifts used to deliver people to and from the Chaotianmen ferry in Chongqing, China. #

Local residents travel in a railcar in Chongqing Port in China's Sichuan province on June 28, 2010. #

Passengers ride up to the Ljubljana Castle in a funicular railway on September 13, 2018, in Ljubiljana, Slovenia. #

Cars of the Lavra funicular pass each other in the streets of Lisbon, Portugal. #

The Hartkaiserbahn funicular, photographed on Hartkaiser Mountain in Ellmau, Tirol, Austria, on August 8, 2012. #

Looking up the Duluth Incline from Superior Street, in Duluth, Minnesota, circa 1908. The lift system was in operation from 1892 until 1939. #

The Kurobe Cable Car passes along an interchange in a tunnel in Tateyama, Toyama, Japan, on September 20, 2014. #

A flatbed truck carries a standard streetcar with passengers on the Oberweissbacher Bergbahn in Thuringia, Germany, photographed on June 19, 2005. #

Looking down on Hallstatt, Austria, from atop the Hallstatt Salt Mine funicular, on October 26, 2015 #

Passengers travel up the grand viaduct at Murren, Switzerland, on a steep funicular railway, photographed circa 1890. #

The Saltburn Cliff Lift in Saltburn-by-the-Sea, North Yorkshire, England, photographed on May 22, 2011. #

Original caption: Valparaiso, Chile, 1940 - At about one penny per trip, one can take the cable car up the city's steep hills. #

A lift carrying tourists goes downhill on Cerro Alegre (Alegre Hill) on August 17, 2010, in Valparaiso, Chile. #

A cable car transports passengers down from Corviglia Mountain on the St. Moritz–Corviglia funicular in the resort of St. Moritz, Switzerland, on March 17, 2016. #

The Verticalp funicular arrives at Emosson Dam, which produces electricity for Swiss Rail, in Emosson, Switzerland, on August 9, 2017. #

A view of Bergen, Norway, with a car of the Fløibanen in the foreground #

A tramline climbs Victoria Peak on a foggy morning in Hong Kong, China, on March 1, 2012. #

A car of the Peak Tram, photographed near the upper terminus on Victoria Peak, with the Hong Kong skyline in the background #

A funicular operates in the favela of Santa Marta on November 15, 2015, in Rio de Janeiro, Brazil. #