Whilst we wouldn't go so far as to class this as a spectacular view, it's worth seeking out if you're visiting the Tate Modern (and you fancy a cup of tea).
On level 7 of the gallery is the appropriately named "Level 7" restaurant, which offers sit-down meals and a bar. (It's the big glass-fronted level that you can see on the roof of the gallery.)
If you stick with the bar, then you can rest your weary feet on a seat next to the window, which overlooks the river and Millennium Bridge, leading to St. Paul's on the other side of the water. The buildings in front of St. Paul's will never win any architectural awards, but the cathedral's great dome is always worth a look.
Tate Modern is the most visited art gallery in London and houses a huge collection of international modern and contemporary art from the 19th-century onwards. You can find works by Monet, Dalí, Cézanne, Pollock, Rothko, Matisse, Pollock, Picasso and Warhol.