Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

Bug-devouring flora are the stars of a special wing of the glass conservatory.

This hidden green space is the city's second largest conservatory.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

Admire endangered plants in a verdant garden that looks straight out of a Monet painting.

Grab a cuppa at England's first and only domestic tea plantation.

An art-filled botanical garden and former dyeworks hiding in plain sight.

An oasis of beauty, tranquility and botanical research in the middle of Rome.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

A surreal botanical garden with an even more surreal tour guide.

An unusual resting place built into the hill with an amazing view of Lake Como.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

The sign at the garden gate reads: "These Plants Can Kill."

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Photographs of the faces of the town's dead cover the walls of this small Italian church.

The urinal, known by many names and designated as a Norwegian Cultural Heritage Site for its simple and functional design, stands as a testament to old gay history in Norway.

This record shop and unofficial black metal museum is an ode to Oslo's heaviest musical export.

Norway's oldest cathedral still in use.