The London Eye: Iconic Observation Wheel on the Thames

The "big circle thing" is the London Eye—officially the Millennium Wheel—a cantilevered observation wheel dominating the South Bank since 2000.

Vital Statistics

• Height: 135 m (443 ft) — 4th tallest Ferris wheel globally
• Diameter: 120 m (394 ft)
• Capsules: 32 (numbered 1-33, no 13) — each holds 25, climate-controlled, rotating
• Rotation: 30 min/revolution — 0.6 mph (0.9 km/h)
• Engineering: A-frame legs, tensioned cables — no central axle (cantilevered)
• Weight: 2,100 tonnes steel

Experience

• Views: 40 km (25 mi) on clear day — Parliament, Big Ben, St. Paul's, Buckingham Palace, Windsor Castle, Wembley
• Duration: 30 min + queue (pre-booked slots essential)
• Access: Waterloo/Embankment/Westminster tubes; river buses
• Special: Private capsules, champagne flights, weddings, yoga

History & Context

• Designed: Marks Barfield Architects (David Marks, Julia Barfield)
• Built: 1998-1999 (floated up Thames, erected over week)
• Opened: Dec 31, 1999 (millennium); public Mar 2000
• Sponsors: British Airways → Merlin Entertainments → Coca-Cola → lastminute.com
• Annual visitors: 3.5-4M (UK's #1 paid attraction)

Nearby Giants

The Shard (310 m), St. Paul's (111 m), BT Tower (189 m) — but Eye's riverside position makes it the defining skyline element from Westminster Bridge.