Standard hotel rooms: Can you guess the city from the skyline? Swiss photographer Roger Eberhard's book "Standard" compiles images of standard hotel rooms around the world alongside the views from the hotel window. Both, he argues, are becoming more and more indistinguishable. Click through the gallery to test your skills.
Room 1306, Tel Aviv: Our gallery opened, if you hadn't already guessed, with Tel Aviv. Eberhard photographs Hilton's entry-level double rooms at the same angle. His original project shifted when he realized Hilton rooms weren't the only things that felt "standard."
Inside and out: "I started the project thinking that [hotel] rooms look the same everywhere you go, and only by looking out the window are you able to tell where you are in the world... and it was quite the opposite," says Eberhard.
Room 2605, Cairo: Perhaps the Arabic signage on the roadside and the shimmer of heat might offer a few clues, but outside, there's little to identify this as one of the world's oldest cities.
Standouts: Eberhard acknowledges that some of the cities in his book deviate from the "standard" look and stand out among the others.
Room 1314, Nairobi: "Nairobi looked extremely authentic to me, with these colorful buses and all these people on the streets and older buildings," he says.
Favorite: Though not particularly striking from an architectural standpoint, this window view remains one of Eberhard's favorites
Room 1608, Bangkok: He says of Bangkok: "It was the most insane view I had... being at the center of the metropolis, it looked ginormous. So dense, so many high-rises, so much stuff is happening."
Flag: Perhaps the national flag fluttering near the bottom of the image is the best giveaway in this otherwise unremarkable stretch of urban waterfront.
Room 1704, Panama City: The Hilton Design and Construction Standards Manual instructs that each room must contain one lounge chair with upholstered arms. Other constants are alarm clocks, telephones, night stands, back rests and reading lamps.
Colorful view: Clear blue skies and colorful low-rise buildings offer a few more indicators than usual in this shot.
Room 311, Cape Town: Eberhard insists that while we're living in an ever-globalizing world, the unique essence of each of our global cities remain intact.
Evolution: "Even if a city changes, it always remains authentic," the photographer adds. "It's evolving... It never becomes a fake."
Room 1808, New York: Conrad Hilton conceived each of his original hotels as "a little America," according to art historian Franziska Solte, who provides one of the introductions to Eberhard's book.
Anonymous places: Even those familiar with the location might struggle to place this somewhat anonymous collection of towers.
Room 1909, Sao Paulo: Even inside Room 1909 there are few indicators we're in Brazil's biggest city.
Architecture: Another city view that might be among the more recognizable, thanks to the distinctive architecture of neighboring buildings.
Room 591, Paris: Once again, the standard room offers decorative flourishes that help place it in the surrounding city.
Landmarks: Once again, to the casual observer, and without easily identifiable landmarks, this could be one of many major cities on the planet.
Room 4320, Sydney: The anonymity here reaches into the hotel room. Eberhard's standard view reveals no clear indicators of location.
Order: A sense of tidiness and order might hint at the location here, but again there's little to give the game away.
Room 2520, Tokyo: The minimalist interior could be read as clearly Japanese, but there again it's a style imitated the world over.
On the water: This one's a little clearer. How many major cities look like this and lie on the edge of a large body of water?
Room 606, Venice: Again, the interior offers small clues. There are classical touches and canal-themed wall art.