[s7e23] The Magician's Code (1) -

Barney and a very drunk Marshall are stuck in Atlantic City.

To keep her calm and distract her from the pain, Ted and Robin tell her stories from their past, including the mystery of a "hidden door" at MacLaren’s. [S7E23] The Magician's Code (1)

A group of senior citizens on the bus fake heart attacks to force the driver to detour to the hospital in NYC where Lily is giving birth. Key Highlights & Trivia Barney and a very drunk Marshall are stuck in Atlantic City

For more episode details and fan trivia, you can check the HIMYM Wiki or the IMDb episode page. not New York City.

They secure seats on a bus labeled "New York," only to realize it is heading to Buffalo (upstate), not New York City.