There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

"Try not to knock anything over!"

Museum dedicated to awful artwork.

The world's largest piece of copyrighted artwork.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Impossibly life-like natural history models created out of glass by a father and son.

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

An enormous, inside-out glass globe built in 1935.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Ice cream stand, snack bar, and time capsule of milk conveyance.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.