(Lydia DePillis)

Some people collect spoons. Others collect rail systems. [Track29]

Bristol Palin, real estate bargain hunter. [NBC]

“Throwaways and runaways” in the nation’s second richest county. [Post]

What’s your favorite unbuilt highway? [Slate]

Crazy New York developer building without tenants or loans. [WSJ]

The banners have arrived. [Borderstan]

The Post discovers that more people are riding bikes. [Post]

Today on the market: $1.2 million by the Cathedral.