The Hayward Gallery in Southbank center has held my favourite exhibitions in London and each time they are extremely well curated. Definitely a place to visit !

Just above the Dorfman Theatre lobby at the National Theatre, is the entrance to the high-level walkway, a public walkway that overlooks the National Theatre props and scenic workshop. It's free and is a unique chance to get a glimpse of what happens backstage. I love popping in when I'm on the south bank, as you get a completely different sight each time, depending on which production the workshops are working on at the time.

Let your imagination run wild in this surreal London Park. Crystal Palace is a great place to walk around dinosaurs and get introduced in prehistoric vibes.  Sculptor Benjamin Waterhouse Hawkins was commissioned to make lifesized models of newly discovered dinosaurs back in 1952. They were the first dinosaur sculptures in the world, pre-dating the publication of Charles Darwin's On the Origin of Species. They have been recently remodelled in 2002. Note: family and children friendly over the weekends

Eccentric and surprising house and museum of architect Sir John Soane. Mostly unchanged since his death over 180 years ago, it is full of atmosphere. Also have spotlit, late night openings.  

The V and A houses a public collection of prints and drawings of every kind imagineable from old master drawings to photographs, playing cards, fashion plates and wallpapers. You have to select what you want to see from the collection http://collections.vam.ac.uk/and book in advance. The behind-the-scenes route up to the study room of v and a is a treat alone (pictured)