Churches and cathedrals — hidden gems

In Dublin, the crypts of St Michan's let you see bodies mummified by limestone, on small-group tours 130 metres from the Jameson Distillery.

Grundtvigs Kirke in Copenhagen: an Expressionist church built from 6 million yellow bricks with an organ-pipe façade. Free entry, in Bispebjerg.

In Stockholm, Engelbrekt Church: a masterpiece of Swedish National Romanticism on a rock in Östermalm, with a 32-metre nave.

On Bukit Purmei hill in Singapore, the island's only Romano-Byzantine church: soaring domes, Norman bells, and a sweeping view over the harbour.

In NoMad, behind a garden, the Church of the Transfiguration: English Gothic from 1849, a lych-gate, and the story of New York's actors.

In Chom Thong, far from crowded wats, Rama III built a Sino-Thai temple with carved doors and silent halls. Zero tour buses.

The Basilique Notre-Dame d'Heliopolis in Cairo: a Byzantine dome, Baron Empain's crypt and the Art Nouveau boulevards of the district he founded.

The Pieve of San Pietro di Feletto, among the Prosecco hills, guards the extremely rare fresco of the Christ of the Sunday.

In Pinzolo, on the church of San Vigilio, the Danse Macabre: a procession of skeletons twenty-two metres long, painted almost five centuries ago.