{"entry-date":"2026-09-02","start-date":"2024-10-10","end-date":"2029-10-09","entity":2300314,"name":"Butterfly Stairs and Walkway Bridge (formerly known as The Sir Hubert Worthington Stair), UMIST, Manchester","dataset":"certificate-of-immunity","typology":"geography","reference":"1491350","prefix":"certificate-of-immunity","organisation-entity":16,"geometry":"MULTIPOLYGON (((-2.232926 53.475275, -2.232988 53.475367, -2.233037 53.475356, -2.233007 53.475313, -2.232969 53.475254, -2.233001 53.475243, -2.233057 53.475215, -2.233081 53.475201, -2.233107 53.475183, -2.233129 53.475164, -2.233098 53.475154, -2.233089 53.47516, -2.233063 53.475159, -2.233039 53.47516, -2.233004 53.475164, -2.232934 53.475176, -2.232867 53.47519, -2.232839 53.475197, -2.232793 53.475212, -2.232757 53.475226, -2.232718 53.475246, -2.232712 53.475246, -2.232704 53.475265, -2.232798 53.475274, -2.232869 53.475273, -2.232921 53.475268, -2.232926 53.475275)))","point":"POINT (-2.232928 53.475236)","quality":"authoritative","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1491350"}