Places b17m Wants to Go

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

700 iron sculptures crammed into a Mediterranean park.

A private garden of sculptural eccentricities.

Dynamite factory turned museum explores the history of explosives.

A collection of wonderfully preserved 19th-century creatures, as well as hunting trophies seized during a police raid.

A wood-and-steel sculpture garden featuring an artful interplay of nature and machinery.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.