You may be visiting London to see its many tourist attractions but if you have a spare day while here, why not do some sightseeing in England.
From the seaside to the countryside, lots of England is easy to visit on a day tour from London.
This section includes some free self-guided sightseeing tours of England that can be easily done in a day from London. All you need is your train fare.

Its original purpose is unclear but some have speculated that it was a
temple made for the worship of ancient earth deities. It has also been called
an astronomical observatory for marking significant events on the prehistoric
calendar.
Others claim that it was a sacred site for the burial of high-ranking
citizens from the societies of long ago. Whatever its purpose when built, it makes a great day out to visit.
The stones you can see today represent Stonehenge in ruin. You can no
longer walk among them.
Many of the original stones have fallen or been
removed by previous generations for home construction or road repair.
There has also been serious damage to some of the smaller bluestones resulting
from close visitor contact (prohibited since 1978) and the prehistoric
carvings on the larger sarsen stones show signs of significant wear.
place map and aerial view

Salisbury Cathedral did not evolve gradually over centuries, with constant additions and renovations. Rather, it was built nearly to completion within a single generation. As a result, it presents a unity of vision that is remarkable.
The Cathedral was begun in 1220, and finished, with the exception of
the tower and spire, in 1258. At 404 feet, it is the tallest spire in
England.
The medieval builders of the
spire accomplished their masterpiece with foundations only 5 to 6 feet
deep in the wet ground to take the strain of 6400 tonnes.
place map and aerial view

Old Sarum is the site of Salisbury's earliest settlement, settled in around 3000 BC. It sits just to the north of present day Salisbury. It was originally a hill fort, being located close to trade routes and the River Avon. It was later used by the Romans as a military base, and under the Saxons it was a major town.
A castle was built on the site after the Norman Conquest and in 1086 William the Conqueror held council there.
It started to decline around 1220 when a cathedral was built at New Sarum (modern day Salisbury).
From the reign of Edward II in the 14th century, Old Sarum elected two members to the House of Commons, despite the fact that from at least the 17th century it had no resident voters at all. In 1831 it had eleven voters, all of whom were landowners who lived elsewhere. This made Old Sarum the most notorious of the rotten boroughs. The Reform Act 1832 completely disenfranchised Old Sarum.
You can walk to Old Sarum from Salisbury along the river path and explore the ruins of the castle, cathedral and royal palace. There are also wonderful views of the surrounding countryside.