There’s a free-roving “World Bests” meme on the loose this week. Thus far it’s attached itself to subway systems, waterfront cities, and cab rides in international destinations.

A friend just forwarded me a link to some very impressive pics of Stockholm’s Tunnelbana stations – apparently, they’re known as “the longest art gallery in the world.”

Paris has a new tram line connecting the outer edges of the 13th, 14th and 15th arrondissements, the first tram within city limits since 1937.

Not owning a car, and being a dedicated urban traveler, I’m a big fan of public transportation, and not just for the ability to get around faster and more cheaply, but for the typically slick-but-simple design package that goes along with it, too. Ergo,

Perhaps as a response to the recent heat wave, when NYC’s normally odoriferous subways must have risen to a whole new level of rankness, the Gawker crew are asking their readers to submit info about the particular smells of subway stations.