These are wonderfully 3D printed Eiffle Towers that are full of details! They work in all scales depending on what size you need. 

The large one is 53/64" (21mm) tall by 23/64" (9.2mm) wide.

The medium one is 41/64" (16.6mm) tall by 17/64" (7mm) wide.

The smallest one is 23/64" (9.2mm) tall by 5/32" (4mm) wide. This will fit on top of a 1:48 cake!