![POTD - Portugal - Lisbon - Tower of Belem](https://i0.wp.com/svguidinglight.com/wp-content/uploads/2017/10/POTD-Portugal-Lisbon-Tower-of-Belem.jpg?fit=750%2C562&ssl=1)
The Tower of Belem is a defensive tower built to help protect the mouth of the Tagus River, but it was not terribly effective. I wrote about this World Heritage Site in yesterday’s blog, which was a travel guide for Lisbon. Check it out because there is some helpful hints to get past the line quicker.