It could be London’s equivalent of climbing the Sydney Harbour Bridge — scaling the top of the giant dome that houses the O2 entertainment center and hosts some Olympic competitions as well. But it ...

U.S. News Insider Tip: Go early in the morning for crisp air and fewer crowds. Afterwards, head southwest to Greenwich for some food and shopping at Greenwich Market. – Marisa Méndez, Senior Editor ...

London's O2 Arena satisfies your entertainment needs within its confines. However, atop of this massive structure is a sort of a training-wheels version of mountain climbing. This is perfect for the ...