Primrose Hill is located just north of Regent's Park, and offers one of the best views of the London skyline from anywhere in the city.
When you first clap eyes on it it doesn't seem like a hill at all, but once you start trekking to the top you realise that it's steeper than it looks! When you finally get to the summit you can have a sit down on one of the benches and enjoy an uninterrupted view from the London Eye to Canary Wharf.
It should be easy enough to pick out the BT Tower, St. Paul's, the London Eye and the Shard of Glass, but can you pick out the Gherkin and the Houses of Parliament? They've got a big silver plaque up there, just in case you need a little help.
[Tip: Remember to take a drink with you, as there are no refreshments at the top of the hill.]