Abstract
National Museum of African American History and Culture, Washington, DC, USA
The building's ornamental bronze-coloured metal lattice is an homage to the intricate ironwork crafted by enslaved African Americans in Louisiana, South Carolina, and elsewhere
Blaenau Ffestiniog, Gwynedd, Wales
Not only the skies are grey in Wales: piled-up slate in this historic mining town
Hamburg, Germany
Nautical details in the harbour make for a colourful abstract
Talisker Bay, Isle of Skye, Scotland
Wavelets of sand reflect their aquatic counterparts as the Atlantic Ocean leaves its mark
Zeeland, Netherlands
A mushroom in the Zeepeduinen dunes
Zoutkamp, Groningen, Netherlands
A jellyfish or a fishing net?
Snæfellsjökull, Snæfellsnes, Iceland
Hvítur (White): the glacier's peak, famous for its role in Jules Verne's Journey to the Centre of the Earth
River Waal, Netherlands
A shrub on the banks turns out to be a lost artwork by Jackson Pollock
near Vík í Mýrdal, Suðurland, Iceland
Svartur (Black): the wind uses black grains of sand to make ingenious patterns on the lava beach
Berlin, Germany
This fairground attraction near the Jannowitzbrücke leaves a colourful rainbow pattern behind in the sky
Tempelhof Airport, Berlin, Germany
Tyre marks on the runway at the former airport
Sognefjord, Sogn og Fjordane, Norway
A passing boat and the remainders of a jetty are all that's needed for a wavy, striped water pattern
Munich, Bavaria, Germany
As a way of avoiding raising the Nazi salute to commemorate those who died during Hitler's infamous 1923 Beer Hall Putsch, many citizens of Munich took a detour through a back alley. These golden cobblestones – tracing the route in the city's Viscardigasse – are a reminder of this civil disobedience during the Third Reich
The beautifully yellowed pages of a 1933 English-Dutch dictionary
Husavík, Norðurland Eystra, Iceland
Beautiful erosion has marbled this wooden fence
An amaryllis petal: almost like rustling crêpe fabric