A look inside tech companies' offices

A 'time tunnel' at Zynga, featuring programmable LED lights, leads from the entrance to the office space.

Lest employees forget that the company logo is a dog, canine images are prominently displayed.

Meeting spaces at Skype, just off rows of desks.

Just one of Silicon Valley's ubiquitous game areas.

Google's employee perks are well known.

The office features an indoor bike lane.

Murals adorn many of the Facebook office's walls. This one is of an android.

The international team is unmistakable, with the overhead flags.

Hassell architecture firm designed Alibaba's headquarters.

Not so different from Silicon Valley, work spaces are open and designed for collaboration.

LinkedIn has a free food program for its employees year round, but during the summer months employees head outside for Food Truck Fridays.

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Zynga, San Francisco

Zynga, San Francisco

Skype, Palo Alto, California

Skype, Palo Alto, California

Google, Boulder, Colorado

Google, Amsterdam

Facebook, Menlo Park, California

Facebook, Menlo Park, California

Alibaba, Hangzhou, China

Alibaba, Hangzhou, China

LinkedIn, San Francisco

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(CNN) -- Google is well known for its elaborate campuses, offering employees extensive food choices, free haircuts, subsidized massages and plenty of ping pong.

Some of the perks are built into its work spaces, such as a rock-climbing wall at its Boulder, Colorado, office or an indoor bicycle lane in Amsterdam.

But overall, the tech industry has been setting the bar high for office aesthetics, using bright, open spaces and striking art.

Here is a look inside -- and, in some cases, outside -- the offices of a few major technology companies.