And you thought Manhattan's retail market was struggling. Fifth Avenue in the 50s is doing just fine thanks to tourists with foreign currency to blow on discounted American goods. The former Brooks Brothers store at 666 Fifth Avenue is now up for grabs and five major chains are currently vying to take over the space (which costs $30 million a year to rent): Uniqlo, Topshop, Zara, Century 21, and Forever 21. So instead of sneering at the next camera-toting German couple who bumps into you on Fifth, thank them for their patronage and move along, okay? [NYP]