The Sedlec Ossuary, or Bone Church, is a unique and macabre chapel decorated with human skeletons, estimated to contain the bones of 40,000 to 70,000 people. Located near Kutná Hora, it's a popular, albeit unusual, tourist destination. Accessibility is somewhat limited due to the historical nature of the site, with uneven surfaces and stairs. A solo visit is perfectly feasible, allowing you to explore at your own pace, though guided tours are available and offer deeper insights into the ossuary's history and artistry. There are no significant seasonal restrictions, but it can get crowded during peak tourist season (summer). The entrance fee is relatively inexpensive, typically a few euros. A typical visit lasts around 1-2 hours.