In, On, At – Prepositions of Place

At

At tells us that the following noun is located at a specific point or location. It shows an exact position.

In

In tells us the noun is in an enclosed space (surround or closed off on all sides). Basically, when something is inside something.

On

On tells us that the following noun is located on a surface. Use on when one thing is attatched to or touching somthing.

What's the difference bewteen these two sentences?

She's at the museum.
She's in the museum.

She's at the museum. - the museum is her location and the type of place she has gone to.
She's in the museum. - the museum is the type of building she is in.

AT	IN	ON
'AT' is used with ... Addresses: 352 State Street 197 Oxford Street Specific Locations/ Points: at The Empire State Building at the corner at the bus stop at the door at the top of page at the end of the road at the entrance at the crossroads at the front desk at a conference at a party at a concert at someone's house at the doctor's/ hairdresser's at the bus stop at the end of road at the crossroads at the front at the back at the top at the bottom at the door	'IN' is used with ... Countries: in England Cities: in London Neighborhood: in Manhattan in Chinatown Enclosed space: in a traffic jam in Time Square in a building in a car in a taxi in a boat in a helicopter in a lift (elevator) in the living - room in the article	'ON' is used with ... Means of transport: on a bus on a train on a plane on a ship on a bicycle/ motorcycle on a horse Communications: on the radio on the television on the phone on the Internet Surfaces: on a table on a wall on the floor on the roof on the menu on the page on the door on the shelf on the second floor Avenues: on The Seventh Avenue Streets: on Oxford street on Columbus street

Usage IN, ON, AT

Preposition	Usage	Example
IN	Room, building, street, town, country; book, paper; car, taxi; picture, world.	In the kitchen, in London, in America, in the hotel; in the book; in the car, in the taxi; in the picture; in the world.
AT	Meaning next to, by an object; for table; for events; place where you are to do something typical (watch a film, study, work).	At the door, at the station; at the table; at the concert, at the party; at the cinema, at school, at work.
ON	Attached; for a place with a river; being on a surface; for a certain side (left, right); for a floor in a house; for public transport; for television, radio.	The picture on the wall; London lies on the Thames; on the table; on the left; on the first floor; on the bus, on the plane; on TV, on the radio.

Streets

Preposition	Usage	Example
IN	In British English, the name of the street without any further precision is preceded by in when you’re talking about where someone lives.	He lives in Oxford Street.
AT	The precise address is preceded by at.	He lives at 128 Oxford Street.
ON	On may occasionally be found to say where a building is located.	Ikea have a big new store on Oxford Street.