Welcome to the second installment of our Summer Streets photo tour. This pic comes courtesy of BicyclesOnly, who says Park Avenue South is "one of the more dangerous roadways to bicycle on in Manhattan. Without the cars, it’s a playground for these two."

More pics after the jump…

Hopscotch action on one of the stub streets. Photo: yyoyoni/Flickr

Bike clowns entertain at Astor Place. Photo: BicyclesOnly/Flickr

The approach to Grand Central Terminal has quickly become one of the iconic sights of Summer Streets…

…as has the passage through the Helmsley Building. Top and bottom photos: yyoyoni/Flickr

One side of Park Avenue North, looking south toward Midtown. Photo: doddnyc/Flickr