I've walked across Tower Bridge countless times, but it wasn't until I actually went inside that I understood why this Victorian marvel still captivates people from around the world. Sure, everyone recognizes those Gothic towers rising 213 feet above the Thames, but there's so much more happening beneath that familiar silhouette.

The bridge opened in 1894 after eight years of construction, and honestly, the engineering feat still impresses me today. Horace Jones designed it as a combined bascule and suspension bridge, which sounds technical but basically means those massive sections can lift up to let tall ships pass through. I've been lucky enough to catch this happening a few times, and watching those 1,000-ton bascules rise is genuinely spectacular.

What surprised me most was the Glass Floor walkway. Walking 42 meters above the river on transparent panels feels surreal. You can see cars moving below, pedestrians crossing, and if you time it right, the bascules operating. It's not for everyone – I've seen people freeze halfway across – but the perspective is unlike anything else in London.

The Victorian Engine Rooms fascinated me more than I expected. The original steam engines that powered the bridge until 1976 are still there, maintained in working condition. Standing next to these massive machines, you realize the incredible ambition behind this project. They were essentially connecting two separate worlds – the 39% of London's population living east of London Bridge had been cut off from proper Thames crossings.

Discover all the secrets of Tower Bridge with our complete London audio guide, which really brings the construction stories to life. The tales of the 432 workers, the political battles, and the technical challenges make the visit much richer than just admiring the views.

I'd suggest visiting during off-peak hours if possible. The bridge attracts over 850,000 visitors annually, and it shows. Early morning or late afternoon works best, plus you might catch better light for photos of the Thames stretching toward the Tower of London.

The whole experience takes about 90 minutes if you don't rush. Between the exhibitions in the towers, the glass walkways, and the engine rooms, there's enough to keep you engaged without feeling overwhelming. It's one of those rare tourist attractions that actually delivers on the engineering marvel promise.