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 ...

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 ...

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 ...