The Temple Church is a hidden gem with a fascinating history. Built in 1162 AD, this round church was once home to the mysterious Knights Templar and played a pivotal role in the creation of the Magna Carta. With its unique design, marble effigies, and dramatic past including surviving fires and religious debates, the Temple Church is a must-visit for history buffs and curious explorers alike.

If you've seen the hit film The DaVinci Code, you'll know this church. I think it's a cool place to check out - even if you don't enter the church.