"I buy all my clothes in thrift shops, " noted Ms. Reist as they sat in his Upper East Side pied-a-terre.

WSJ: Step by Step to Love

Many pied-a-terre owners buy in the Upper East or West Side and it is worth checking out Turtle Bay, a separate enclave in the east 40s near the UN.

BBC: Living in: New York

Mitte is the most popular, being the first area colonized after the Wall came down, and now the most sought-after place to live for everyone from moneyed ex-pats to the German pied-a-terre buyer.

BBC: Living in: Berlin

Rather than simply buy a pied-a-terre in an enviable locale by which to park money as a long-term investment, more wealthy buyers are snapping up properties that they can rent out as income-producing assets.

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