During my recent trip to the Czech Republic, my group spent a few days in the town of Olomouc, which has a population of around 100,000. Olomouc is located in the Moravian province of the Czech Republic, and has many historical sites and churches. Seeing that church history (broadly interpreted) is one of my major interests, I enjoyed seeing many of these sites. One of the highlights of the stay in Olomouc was the opportunity to worship with the Olomouc Baptist Church and meet some of the members of the church. Other highlights include some of the sites depicted below. Info on some of the sites can be found at this website.
In my opinion, the most impressive structure (from a visual and architectural standpoint, anyway) in the town is St. Wenceslas Cathedral. The origins of this building date to the twelfth century according to the website listed above, although the current Gothic look resulted from later renovations.
One of the more interesting aspects of a tour of this particular church is the opportunity to descend two floors to a mausoleum that houses the remains of some of the more famous bishops that worked in this parish.
The town square in Olomouc has several interesting monuments. One of these monuments is the Holy Trinity Column. From what some friends told me, it is possible to "tour" the inside of the column, although I did not do so.