Ride the Eritrean Railway

Narrow-gauge railway round the island.

The El Chepe train climbs 2,400 metres through 86 tunnels and 37 bridges across a canyon system deeper than the Grand Canyon.

UNESCO-listed alpine railway over the Bernina Pass from Chur to Tirano.

Switchback railway descending a near-vertical Andean wall at Alausi.

Seven hours of tea plantations, waterfalls and the Nine Arches Bridge from an open train door — often called the world’s most beautiful railway.

Four hours drifting past the karst peaks on the back of the 20-yuan note, with cormorant fishermen and water buffalo on the banks.

The world’s highest paved international road, Islamabad to Kashgar.

The highest peak in Wales — walk up, or take the rack railway.