Hi, Rusty!
When we took the Scottish clan to see the Tower of London a few years ago, it cost us over £100 to pay for everyone to gain entry!!
Ah, now Tower Bridge is another great place to visit!
You could see how impressive it looks from the end of the Marathon run on Sunday?
You can go up in a lift and visit the glassed - in walkways, from where you can see panoramic views over London; exhibitions held there ; engine rooms ......etc
See the link
http://www.towerbridge.org.uk/whats-on/
Tower Bridge, as you know, lifts up to allow large ships to pass beneath.
So lift operating times are subject to sailing times.
Now, the crossword, I am still struggling today.... it is hard?
I have done 14a purely because I know that the Brontes' pseudonym is "Bell" and I know the literary term.
So Bell sound like Belles
let - allowed
tres - French for "very".
I personally liked it, but I didn't like a lot of the other clues!
16a had me thinking of "Hang out the washing on the Siegfried line"!
I haven't yet progressed to 19d......the other clue you mentioned...... I've taken a look out of context, but cannot come up with an answer.....?