This is the house that spite built.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Three prestigious academic collections come together to create a world-class natural history museum.

A men’s restroom became a sandwich shop.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

Dedicated to the neverending mathematical constant, this plaque next to a park bench was sponsored by an anonymous benefactor.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

Created by a local artist, these quirky sculptures each have their own names and personalities.

The world's largest piece of copyrighted artwork.

A luxury hotel constructed out of a former jail.

This statue intended for children to enjoy became a minor political spat.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

This impressive Boston holy house is the American mecca for Christian scientists.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

Millions of numbers carved in glass represent the tattoos forced upon victims.