FABULOUS architecture old and modern will be on show this weekend as Hillingdon celebrates London Open House.
The public can access some of the oldest, most famous and newest buildings free of charge for this weekend only.
Among those opening their doors is the Great Barn, Harmondsworth, first built in the 15th century, which is open both Saturday and Sunday from 10.30am to 5pm.
The new Harefield Academy, in Northwood Way, Harefield, will also open between 10am and 1pm on both days.
Another academy features on the list of buildings willing to let the public wander around: Stockley Academy, in Park View Road, Yiewsley, opens between 10am and 2pm on Saturday.
Many churches will also be part of the event, including St Mary the Virgin, High Street, Harmondsworth; St Martin's Parish Church, Church Road, West Drayton; and St Mary's, off Church Hill, Harefield.
The church of St Peter and St Paul, in St Peter's Way, Harlington, will also be open both days, as will the Berkeley stable block in Cranford Park; Drayton Hall in Church Road, West Drayton; Ickenham Manor; number 97 Park Avenue in Ruislip, a Bauhaus semi-detached house.
The Old Coach House and dovecote in Eastcote, will also be open, but times vary.
Visitors will also have a chance to look around the indoor athletics centre at Brunel University in Cleveland Road, Uxbridge, although best access is from Kingston Lane.
The Uxbridge Quaker Meeting House in York Road will also open on Saturday at 11am.
Visit www.openhouse.org.uk for full details, locations and opening times of all the buildings.