Optical illusion: Follow the line in Glasgow
Optical illusion: Scottish souvenirs
Optical illusion: Along the river Clyde, Glasgow
Optical illusion: Rising moon at St-Quay Portrieux
Optical illusion: Volcano boarding
Optical illusion: Edinburgh castle and the first signs of autumn
Optical illusion: Early morning at the Mayenne river
Optical illusion: Green water
Optical illusion: Royal Netherlands Institute for Sea Research, Texel
Optical illusion: Hole in the wall
Optical illusion: Rooftop view on Ribeira, Porto
Optical illusion: The Grand Bazaar, Istanbul
Optical illusion: Evening at Galata bridge, Istanbul, Turkey
Optical illusion: Church of Santa Engrácia, Lisbon
Optical illusion: Rem Koolhaas in Portugal: Casa da Música, Porto.
Optical illusion: The Jerónimos Monastery, Lisbon
Optical illusion: Just a street in Porto
Optical illusion: The Dom Luís 1st bridge, Porto, Portugal
Optical illusion: The end of the world, Cabo da Roca, Portugal
Optical illusion: Sunset over Alfama, Lisbon
Optical illusion: The baby hedgehog orphan
Optical illusion: Three of a kind
Optical illusion: A view from Domme
Optical illusion: Over the wall
Optical illusion: The wedding - Romance at San Miniato al Monte
Optical illusion: Futuristic Groningen architecture
Optical illusion: Here comes the sun - Der Reichstag Berlin
Optical illusion: The Helmet at sunset, Valencia
Optical illusion: Sailing La Seine
Optical illusion: Une maisonette à la Bretonne