the solis viaduct of the rhaetian railway or soliser viadukt (solisbrucke oder solisbruecke)

solis viaduct rhaetian railway soliser viadukt solisbrücke oder solisbruecke canton grisons switzerland kanton graubünden schweiz urban wall buildings monument city history alps arch architecture beautiful bridge building construction country countryside engine engineering europe express famous great green heritage historic historical journey landmark landscape locomotive nature old outdoor rail railroad road rural scenery scenic stone structure swiss tourism track train transport transportation travel valley view solisbrucke