Alkaline wetlands are technically known as fens. Bog gardens are not ponds. They are designed to keep the root zone moist at all times but not soaking wet. Once you build your bog, it can blend in unnoticed into any backyard woodland landscape. Once you have made your plant choices, choose the location for your bog.
Carnivorous plants do well in bright sun.
Cypripediums and other orchids prefer high, open shade. Start by digging a hole at least two feet wide and two feet long. The hole should also be 24 inches deep. Line the hole completely with one to three layers of sturdy plastic at least 4 mill in thickness. I use discarded greenhouse plastic given away free by the local nurserymen.