Gilt City Deals is an online “sample sale” site for local city deals, (think: a high-end Groupon) and is also a division of Gilt Groupe. Here is the Gilt City invite code.

GiltCity Deals

Membership: Free
Type: Free to join (get an invitation code from Frugal Bon Vivant)
Shipping: free (online coupons)
Referrals: $25 credit after a friend’s first purchase
Cities: currently only in Boston, Chicago, Los Angeles, Miami, New York City, and San Francisco.
Returns/Cancellations: No cancellations/returns
Time/Duration of Sale: weekly deals starting at noon PST
Product Categories: Theater tickets, spa packages, dining/restaurant events, and more
Previously Featured Travel Deals: IFC Films advanced screening, Bumble & Bumble 45% off, Sushi & sake at Nobu etc

GiltCity just launched so they will be adding new cities soon, and you can sign up to be notified when they launch new cities.