The walk up through Birmingham Christmas Market reveals some of our city's most spectacular buildings.
Once you hit Victoria Square and Chamberlain Square, en route to Centenary Square, you see some of the best of Brum, fine old buildings that tell of our civic history and heritage.
One of them is filled with secrets, tucked-away corridors and even an old wartime mortuary - and now you can go in and explore them.
Read more: The Birmingham Christmas Market unlike any other in town
The Birmingham Museum and Art Gallery is celebrating 140 years since the Prince of Wales (later King Edward VII) opened its doors for the first time, back on Saturday, November 28, 1885.
As part of its celebrations, the museum - which an estimated 100 million people have visited over the years - is opening for 'hidden spaces' tours into the areas few ever go.
The hour-long tours (£15 for adults, £7.50 for kids, £12 for concessions and £5 for members) take you beyond the gallery walls into areas usually closed to the public.
That means locked storerooms, tucked-away corridors and some architectural gems few get to see.
It includes the council basement that was used as a temporary mortuary in World War Two and the hidden void above the famous Round Room, with a view down on passers-by.
The tours are limited but you can book in now for Thursday, November 20, Saturday November 22, Thursday, November 27, Thursday, December 4 and Saturday, December 6.
It's worth mentioning now that there are more than 100 steps you'll need to take, with some down a narrow staircase, so it's not accessible to those who have limited mobility as there's no wheelchair or mobility scooter access.
It's also not suitable for those afraid of heights as some areas are high above the museum.
If you'd rather celebrate the museum's birthday from ground level, there's a birthday cake cutting scheduled for Friday, November 28 with live poetry from Bradley Taylor.
The Royal Birmingham Conservatoire Trumpet Club will be performing too.
And, for little ones, there's a My First Museum tour for babs under five and their families, with a hunt for birthday party hats.