If you long to see London from a different perspective, look no further. To mark the start of the new millennium, architects David Marks and Julia Barfield conceived an entirely new vision: a beautiful and celebratory structure, which would allow people to see this great city from a completely new perspective -- on a giant wheel. As well as representing the turning of the century, a wheel was seen as a symbol of regeneration and the passing of time. The London Eye is the largest observation wheel ever built, and in the top 10 tallest structures in London. From design to construction it took seven years to complete. The 25-minute slow-motion ride is so smooth, you'd hardly know you were suspended over the Thames, moving slowly round. On a clear day you can take in a range of up to 25 mi, viewing London's most famous landmarks from a fascinating angle. If you're looking for a special place to celebrate, champagne and canapés can be arranged ahead; check the Web site for details. COST: £11.50. Tube: Waterloo.