A photograph of United Kingdom

Country guide

United Kingdom

The United Kingdom is 244,376 km² holding 69,281,437 people, and it is four countries rather than one: England, Scotland, Wales and Northern Ireland, with Londo...

Photograph · Colin · CC BY-SA 4.0

27,736 Places
4Cities

Reviewed by Elena Voss · Roavina Travel Editor

The United Kingdom is 244,376 km² holding 69,281,437 people, and it is four countries rather than one: England, Scotland, Wales and Northern Ireland, with London, Edinburgh, Cardiff and Belfast as their capitals. Three of the four run parliaments of their own over devolved matters, and the law splits three ways — England and Wales, Scotland, Northern Ireland. A visitor meets that in small practical things rather than at a border. London alone holds about 9.1 million of the total, which is why so many trips never leave it, and why the ones that do feel like arriving somewhere else.

Checked 2026-08-25

Cities

Every city catalogued in this country so far, ranked by how much there is to see.

Practical information

Language spoken
English; Welsh is official in Wales
National practical orientation; regional and minority languages may also be used
Dialling code
+44
International calling code; local area and mobile prefixes still apply
Currency
Pound sterling (GBP)
Use the official local currency; card acceptance varies by place
Emergency number
999 or 112
Use only for an emergency; tourist assistance may use a separate number
Plug type
Type G · 230 V
Check that chargers support the recorded voltage before using an adapter
Tap water
Safe from the mains
Public water suppliers regulate mains drinking water; use cold mains taps

Top things to see

Ranked by importance — sitelinks, pageviews and heritage status, not editor preference.

  1. Hyde Park Hyde Park
    07 1 hr 30 min

    Hyde Park

    Hyde Park is a 350-acre (140-hectare) royal park in the City of Westminster, the largest of the four central London parks and the one that runs west from Marble Arch and Hyde Park Corner to the Serpentine and the boundary…

    • Must see
    • Historic monument
    • London
  2. Kensington Palace Kensington Palace
    08 2 hours

    Kensington Palace

    Kensington Palace is a royal residence on the western edge of Kensington Gardens, half of it open as a historic house and half of it still lived in.

    • Must see
    • Historic monument
    • London
  3. Big Ben Big Ben
    09 1 hr 45 min

    Big Ben

    Elizabeth Tower

    Big Ben is the bell, not the tower.

    • Must see
    • Historic monument
    • London
  4. Palace of Westminster Palace of Westminster
    10 2 hours

    Palace of Westminster

    The Palace of Westminster is the seat of the two houses of the United Kingdom Parliament and, unlike the other great buildings on this stretch of the Thames, it is a workplace before it is a monument.

    • Must see
    • Historic monument
    • London
  5. Edinburgh Castle Edinburgh Castle
    11 2 hours

    Edinburgh Castle

    Edinburgh Castle sits on a plug of volcanic rock at the head of the Royal Mile, and it is the reason the city grew where it did.

    • Must see
    • Historic monument
    • Edinburgh
  6. Holyrood Palace Holyrood Palace
    12 2 hours

    Holyrood Palace

    Palace of Holyroodhouse

    The Palace of Holyroodhouse is the King's official residence in Scotland and a public visit that combines royal rooms, the remains of Holyrood Abbey and palace gardens.

    • Must see
    • Historic monument
    • Edinburgh
  7. John Rylands Library John Rylands Library
    13 1 hr 15 min

    John Rylands Library

    John Rylands Library opened in 1900 as Enriqueta Rylands’s gift to Manchester and was purpose-built to give public access to rare books, manuscripts and archives.

    • Must see
    • Historic monument
    • Manchester
  8. Scottish Parliament Scottish Parliament
    14 1 hr 30 min

    Scottish Parliament

    The Scottish Parliament

    The Scottish Parliament is a working parliamentary building at Holyrood and a free public visit, not merely an architectural sight.

    • Must see
    • Historic monument
    • Edinburgh
  9. Chetham's Hospital Chetham's Hospital
    15 1 hr 30 min

    Chetham's Hospital

    Chetham’s Hospital is the medieval charitable and educational complex that contains Chetham’s Library and Chetham’s School of Music. The library was founded in 1653 and describes itself as the oldest public library in the English-speaking world.

    • Notable
    • Historic monument
    • Manchester

Source: OpenStreetMap contributors, Wikidata ·

Common questions

How long should a first trip to United Kingdom be?

Ten to fourteen days can cover four or five days in London, two in Manchester, and two or three each in Edinburgh and Glasgow. The Highlands, Lake District, or Welsh national parks need dedicated nights and should not be squeezed into London day trips.

What entry documents are needed for United Kingdom?

UK document rules depend on nationality and trip purpose, and many visitors now need an Electronic Travel Authorisation before boarding. Check the linked UK government visa service for both visa and ETA status shortly before travel.

What is the best way to travel around United Kingdom?

Intercity rail is the practical spine between London, Manchester, Edinburgh, and Glasgow, with advance fares usually distinct from flexible tickets. Each city runs its own local fare system, so London's contactless cap is not a nationwide travel pass.

When is a practical time to visit United Kingdom?

May to June and September are useful planning windows for this route, but conditions vary between southern England and Scotland. Festival dates in Edinburgh and rural transport in national parks can matter more than the national seasonal label.

What money and payment basics apply in United Kingdom?

The United Kingdom uses pound sterling (GBP). Contactless payment is widespread in major cities, but keep another payment method for rural services or terminals that do not share London's payment arrangements.

What practical safety details should I save for United Kingdom?

Use 999 or 112 for emergencies in the United Kingdom. Type G sockets supply 230 V, and mains tap water is recorded as safe; save rail disruption information as well when the itinerary depends on several city-to-city journeys.